Conversion of Inverse trigonometric function. … Table Of Derivatives Of Inverse Trigonometric Functions. Required fields are marked *. var s = document.getElementsByTagName('script')[0]; The function Hot Network Questions Where did all the old discussions on … Domain of Inverse Trigonometric Functions. The following table gives the formula for the derivatives of the inverse trigonometric functions. var cx = 'partner-pub-2164293248649195:8834753743'; According to 3 above tan y = - 1 with - π / 2 < y < π / 2 From table of special angles tan (π / 4) = 1. now you can see without using any formula on Inverse trigonometric function you can easily solve it. From this you could determine other information about the triangle. Before any discussion look at the following table that gives you clear understanding whether the above inverse trigonometric functions are defined or not. 1 3 ∘. This technique is useful when you prefer to avoid formula. Our goal is to convert an Inverse trigonometric function to another one. Cosine. Inverse trigonometric functions review. … 5. For each of the following problems differentiate the given function. In the previous set of problems, you were given one side length and one angle. Inverse Trig Functions. Using inverse trig functions with a calculator. Trigonometric ratios of complementary angles. Solved Problems. . Which givesarccos( cos (4 π / 3)) = 2 π / 3, Answers to Above Exercises1. Solving word problems in trigonometry. According to 3 abovetan y = - 1 with - π / 2 < y < π / 2From table of special angles tan (π / 4) = 1.We also know that tan(- x) = - tan x. Sotan (-π / 4) = - 1Compare the last statement with tan y = - 1 to obtainy = - π/43. We first transform the given expression noting that cos (4 π / 3) = cos (2 π / 3) as followsarccos( cos (4 π / 3)) = arccos( cos (2 π / 3))2 π / 3 was chosen because it satisfies the condition 0 ≤ y ≤ π . \displaystyle \angle I ∠I . For example consider the above problem \(sin\;cos^{-1}\left ( \frac{3}{5} \right )\) now you can see without using any formula on … … If x is positive, then the value of the inverse function is always a first quadrant angle, or 0. Section 3-7 : Derivatives of Inverse Trig Functions. More clearly, from the range of trigonometric functions, we can get the domain of inverse trigonometric functions. \displaystyle m\angle I= 60^ {\circ } m∠I = 60∘. ∠ I. Already we know the range of sin(x). Hence, there is no value of x for which sin x = 2; since the domain of sin-1x is -1 to 1 for the values of x. However, only three integration formulas are noted in the rule on integration formulas resulting in inverse trigonometric functions because the remaining three are negative versions of the ones we use. This technique is useful when you prefer to avoid formula. A mathematics blog, designed to help students…. If you are already aware of the various formula of Inverse trigonometric function then it’s time to proceed further. Explain how this can be done using the cosine function or the inverse cosine function. HS MATHEMATICS 2018 PART B IN-DEPTH SOLUTION (WBCHSE). s.parentNode.insertBefore(gcse, s); In this article you will learn about variety of problems on Inverse trigonometric functions (inverse circular function). Hencearcsin( sin (7 π / 4)) = - π / 42. The derivatives of \(6\) inverse trigonometric functions considered above are consolidated in the following table: In the examples below, find the derivative of the given function. gcse.src = 'https://cse.google.com/cse.js?cx=' + cx; Lets convert \(sin^{-1}x\;as\;cos^{-1}y\;and\;tan^{-1}z\), Your email address will not be published. })(); What type of content do you plan to share with your subscribers? According to theorem 2 abovecos y = - 1 / 2 with 0 ≤ y ≤ πFrom table of special angles cos (π / 3) = 1 / 2We also know that cos(π - x) = - cos x. Socos (π - π/3) = - 1 / 2Compare the last statement with cos y = - 1 / 2 to obtainy = π - π / 3 = 2 π / 3. eval(ez_write_tag([[728,90],'analyzemath_com-box-4','ezslot_3',263,'0','0'])); Solution to question 2:Let z = cos ( arcsin x ) and y = arcsin x so that z = cos y. This is the currently selected item. Example 1 \[y = \arctan {\frac{1}{x}}\] Example 2 \[y = \arcsin \left( {x – 1} \right)\] Example 3 This video covers the derivative rules for inverse trigonometric functions like, inverse sine, inverse cosine, and inverse tangent. Enter your email address to stay updated. Using theorem 3 above y = arctan x may also be written astan y = x with - π / 2 < y < π / 2Alsotan2y = sin2y / cos2y = sin2y / (1 - sin2y)Solve the above for sin ysin y = + or - √ [ tan2y / (1 + tan2y) ]= + or - | tan y | / √ [ (1 + tan2y) ]For - π / 2 < y ≤ 0 sin y is negative and tan y is also negative so that | tan y | = - tan y andsin y = - ( - tan y ) / √ [ (1 + tan2y) ] = tan y / √ [ (1 + tan2y) ]For 0 ≤ y < π/2 sin y is positive and tan y is also positive so that | tan y | = tan y andsin y = tan y / √ [ (1 + tan2y) ]Finallyz = csc ( arctan x ) = 1 / sin y = √ [ (1 + x2) ] / x. eval(ez_write_tag([[580,400],'analyzemath_com-banner-1','ezslot_4',361,'0','0'])); Solution to question 41. They are based off of an angle of the right triangle and the ratio of two of its sides. Use the formulas listed in the rule on integration formulas resulting in inverse trigonometric functions to match up the correct format and make alterations as necessary to solve the problem. If you know the side opposite and the side adjacent to the angle in question, the inverse tangent is the function you need. Therefore \(sec^{-1}\frac{1}{2}\) is undefined. In calculus, sin −1 x, tan −1 x, and cos −1 x are the most important inverse trigonometric functions. Existence of Inverse Trigonometric Function, Find General and Principal Value of Inverse Trigonometric Functions, Evaluation of Inverse Trigonometric Function, Conversion of Inverse trigonometric function, Relation Proof type Problems on Inverse trigonometric function. We studied Inverses of Functions here; we remember that getting the inverse of a function is basically switching the x and y values, and the inverse of a function is symmetrical (a mirror image) around the line y=x. arccos(- 1 / 2)Let y = arccos(- 1 / 2). Derivatives of inverse trigonometric functions Calculator online with solution and steps. The range of y = arcsec x. So we first transform the given expression noting that sin (7 π / 4) = sin (-π / 4) as followsarcsin( sin (7 π / 4)) = arcsin( sin (- π / 4))- π / 4 was chosen because it satisfies the condition - π / 2 ≤ y ≤ π / 2. Solution to question 1 1. arcsin(- √3 / 2) Let y = arcsin(- √3 / 2). Problems on inverse trigonometric functions are solved and detailed solutions are presented. Determine the measure of. Inverse Trigonometric Functions on Brilliant, the largest community of math and science problem solvers. Domain and range of trigonometric functions Domain and range of inverse trigonometric functions. According to theorem 1 above y = arcsin x may also be written assin y = x with - π / 2 ≤ y ≤ π / 2Alsosin2y + cos2y = 1Substitute sin y by x and solve for cos y to obtaincos y = + or - √ (1 - x2)But - π / 2 ≤ y ≤ π / 2 so that cos y is positivez = cos y = cos(arcsin x) = √ (1 - x 2), Solution to question 3Let z = csc ( arctan x ) and y = arctan x so that z = csc y = 1 / sin y. 5 π / 6, Table for the 6 trigonometric functions for special angles, Simplify Trigonometric Expressions - Questions With Answers, Find Domain and Range of Arcsine Functions, Graph, Domain and Range of Arcsin function, Graph, Domain and Range of Arctan function, Find Domain and Range of Arccosine Functions, Solve Inverse Trigonometric Functions Questions. - π / 42. For example, if you know the hypotenuse and the side opposite the angle in question, you could use the inverse sine function. Detailed step by step solutions to your Derivatives of inverse trigonometric functions problems online with our math solver and calculator. Click or tap a problem to see the solution. Evaluate [latex]\sin^{−1}(0.97)[/latex] using a calculator. Integrals Involving the Inverse Trig Functions. The inverse trigonometric functions are used to determine the angle measure when at least two sides of a right triangle are known. Practice: Evaluate inverse trig functions. Example 1: Find the value of x, for sin(x) = 2. Trigonometric ratios of supplementary angles Trigonometric identities Problems on trigonometric identities Trigonometry heights and distances. So sin (- π / 3) = - √3 / 2 Comparing the last expression with the equation sin y = - √3 / 2, we conclude that y = - π / 3 2. arctan(- 1 ) Let y = arctan(- 1 ). I am going to skip it with a little touch, as I have already discussed how to find general and principal value of inverse trigonometric function. Evaluating the Inverse Sine on a Calculator. how to find general and principal value of inverse trigonometric function. One of the more common notations for inverse trig functions can be very confusing. Specifically, they are the inverses of the sine, cosine, tangent, cotangent, secant, and cosecant functions, and are used to obtain an angle from any of the angle's trigonometric ratios. Why must the domain of the sine function, [latex]\sin x[/latex], be restricted to [latex]\left[−\frac{\pi}{2}\text{, }\frac{\pi}{2}\right][/latex] for the inverse sine function to exist? m ∠ I = 5 3. var gcse = document.createElement('script'); Although every problem can not be solved using this conversion method, still it will be effective for some time. Hence, \(sin^{-1}\frac{1.8}{1.9}\) is defined. For the second problem as x = 1.8/1.9, so it satisfies − 1 ≤ x ≤ 1. The functions . Nevertheless, here are the ranges that make the rest single-valued. Java applets are used to explore, interactively, important topics in trigonometry such as graphs of the 6 trigonometric functions, inverse trigonometric functions, unit … arcsin( sin ( y ) ) = y only for - π / 2 ≤ y ≤ π / 2. Inverse trigonometric function of trigonometric function. Our goal is to convert an Inverse trigonometric function to another one. When we integrate to get Inverse Trigonometric Functions back, we have use tricks to get the functions to look like one of the inverse trig forms and then usually use U-Substitution Integration to perform the integral.. Solution: sin-1(sin (π/6) = π/6 (Using identity sin-1(sin (x) ) = x) Example 3: Find sin (cos-13/5). (function() { In this section, we are interested in the inverse functions of the trigonometric functions and .You may recall from our work earlier in the semester that in order for a function to have an inverse, it must be one-to-one (or pass the horizontal line test: any horizontal line intersects the graph at most once).. According to theorem 1 above, this is equivalent tosin y = - √3 / 2 , with - π / 2 ≤ y ≤ π / 2From table of special angles sin (π /3) = √3 / 2.We also know that sin(-x) = - sin x. Sosin (- π / 3) = - √3 / 2Comparing the last expression with the equation sin y = - √3 / 2, we conclude thaty = - π / 32. arctan(- 1 )Let y = arctan(- 1 ). In mathematics, the inverse trigonometric functions (occasionally also called arcus functions, antitrigonometric functions or cyclometric functions) are the inverse functions of the trigonometric functions (with suitably restricted domains). ( x) + 9 sin − 1 ( x) C(t) =5sin−1(t) −cos−1(t) C ( t) = 5 sin − 1 ( t) − cos − 1 ( t) g(z) = tan−1(z) +4cos−1(z) g ( z) = tan − 1 ( z) + 4 cos − 1 ( z) h(t) =sec−1(t)−t3cos−1(t) h ( t) = sec − 1 ( t) − t 3 cos − 1 ( t) 6. Now its your turn to solve the rest of the problems and put it on the comment box. Restricting domains of functions to make them invertible. There are six inverse trigonometric functions. The inverse trigonometric functions are also called arcus functions or anti trigonometric functions. This trigonometry video tutorial provides a basic introduction on evaluating inverse trigonometric functions. So tan … Pythagorean theorem The same principles apply for the inverses of six trigonometric functions, but since the trig functions are periodic (repeating), these functions don’t have inverses, unless we restrict the domain. According to theorem 1 above, this is equivalent to sin y = - √3 / 2 , with - π / 2 ≤ y ≤ π / 2 From table of special angles sin (π /3) = √3 / 2. A list of problems on inverse trigonometric functions. I get $\sin 2\alpha$; book says $-4\sin\alpha$. Solving Inverse trig problems using substitution? Lessons On Trigonometry Inverse trigonometry Trigonometric Derivatives Calculus: Derivatives Calculus Lessons. Solved exercises of Derivatives of inverse trigonometric functions. gcse.type = 'text/javascript'; arccos( cos ( y ) ) = y only for 0 ≤ y ≤ π . 2. The particular function that should be used depends on what two sides are known. We first review some of the theorems and properties of the inverse functions. eval(ez_write_tag([[728,90],'analyzemath_com-medrectangle-3','ezslot_1',320,'0','0'])); Solution to question 11. arcsin(- √3 / 2)eval(ez_write_tag([[728,90],'analyzemath_com-medrectangle-4','ezslot_2',340,'0','0']));Let y = arcsin(- √3 / 2). Although every problem can not be solved using this conversion method, still it will be effective for some time. m ∠ I = 6 0 ∘. Next lesson. 3. That is, range of sin(x) is [-1, 1] And also, we know the fact, Domain of inverse function = Range of the function. It is widely used in many fields like geometry, engineering, physics, etc. Determine whether the following Inverse trigonometric functions exist or not. √(x2 + 1)3. If not, have a look on Inverse trigonometric function formula. For the first problem since x= ½, as 1/2 does not belongs to |x| ≥ 1. gcse.async = true; VOCABULARY Inverse trig functions ... Each of the problems before can be rewritten as an inverse: INVERSE TRIG FUNCTIONS SOLVE FOR ANGLES FUNCTION INVERSE sin(x) sin-1 (x) or arcsin(x) cos(x) cos-1 (x) or arccos(x) tan(x) tan-1 (x) or arctan(x) Assume all angles are in QI. f (x) = sin(x)+9sin−1(x) f ( x) = sin. formula on Inverse trigonometric function, Matrix as a Sum of Symmetric & Skew-Symmetric Matrices, Solution of 10 mcq Questions appeared in WBCHSE 2016(Math), Part B of WBCHSE MATHEMATICS PAPER 2017(IN-DEPTH SOLUTION), Different Types Of Problems on Inverse Trigonometric Functions. We also know that tan(- x) = - tan x. It has been explained clearly below. Also exercises with answers are presented at the end of this page. Free tutorials and problems on solving trigonometric equations, trigonometric identities and formulas can also be found. Solve for x: 8 10 x. As shown below, we will restrict the domains to certain quadrants so the original function passes the horizontal lin… Although problem (iii) can be solved using the formula, but I would like to show you another way to solve this type of Inverse trigonometric function problems. Some problems involving inverse trig functions include the composition of the inverse trig function with a trig function. If the inverse trig function occurs rst in the composition, we can simplify the expression by drawing a triangle. For example consider the above problem \(sin\;cos^{-1}\left ( \frac{3}{5} \right )\). In other words, the inverse cosine is denoted as \({\cos ^{ - 1}}\left( x \right)\). First, regardless of how you are used to dealing with exponentiation we tend to denote an inverse trig function with an “exponent” of “-1”. Your email address will not be published. Problem 1. Trigonometric Functions are functions widely used in Engineering and Mathematics. Tangent. Example 2: Find the value of sin-1(sin (π/6)). Find the general and principal value of \(tan^{-1}1\;and\; tan^{-1}(-1)\), Find the general and principal value of \(cos^{-1}\frac{1}{2}\;and\;cos^{-1}-\frac{1}{2}\), (ii) \(sin\left ( sin^{-1}\frac{1}{2}+sec^{-1}2 \right )+cos\left ( tan^{-1}\frac{1}{3}+tan^{-1}3 \right )\), (iii) \(sin\;cos^{-1}\left ( \frac{3}{5} \right )\). Solution: Suppose that, cos-13/5 = x So, cos x = 3/5 We know, sin x = \sqrt{1 – cos^2 x} So, sin x = \sqrt{1 – \frac{9}{25}}= 4/5 This implies, sin x = sin (cos-13/5) = 4/5 Examp… These are the inverse functions of the trigonometric functions with suitably restricted domains.Specifically, they are the inverse functions of the sine, cosine, tangent, cotangent, secant, and cosecant functions, and are used to obtain an angle from any of the angle’s trigonometric ratios. Inverse Trigonometric Functions You've studied how the trigonometric functions sin ( x ) , cos ( x ) , and tan ( x ) can be used to find an unknown side length of a right triangle, if one side length and an angle measure are known. Simplifying $\cot\alpha(1-\cos2\alpha)$. Now that you understand inverse trig functions, this opens up a whole new set of problems you can solve. Solution: Given: sinx = 2 x =sin-1(2), which is not possible. The three most common trigonometric functions are: Sine. We also know that sin(-x) = - sin x. The inverse trigonometric functions of sine, cosine, tangent, cosecant, secant and cotangent are used to find the angle of a triangle from any of the trigonometric functions. Integrals Resulting in Other Inverse Trigonometric Functions. Domain & range of inverse tangent function. Substitution is often required to put the integrand in the correct form. Using a calculator 3 ) ) 2\alpha $ ; book says $ -4\sin\alpha.. $ \sin 2\alpha $ ; book says $ -4\sin\alpha $ useful when you prefer to avoid.... To avoid formula functions exist or not although every problem can not be solved this. Sine function functions ( inverse circular function ) depends on what two sides are known functions, we can the... Common notations for inverse trig functions correct form formula for the second as... ( WBCHSE ) of trigonometric functions ( inverse circular inverse trigonometric functions problems ) integrand in the,! Tap a problem to see the solution following table that gives you clear understanding whether the Above trigonometric... At least two sides are known - sin x to see the solution detailed are... ] \sin^ { −1 } ( 0.97 ) [ /latex ] using a calculator m\angle I= 60^ { }... The range of inverse trigonometric functions exist or not rest of the theorems and properties of the various of... Be used depends on what two sides are known IN-DEPTH solution ( WBCHSE ) widely in. On trigonometry inverse trigonometry trigonometric Derivatives Calculus: Derivatives of the more common for! Free tutorials and problems on solving trigonometric equations, trigonometric identities problems on trigonometric identities and formulas can also found! X = 1.8/1.9, so it satisfies − 1 ≤ x ≤ 1 trigonometric identities and formulas can also found... All the old discussions on … the inverse sine, inverse cosine, and −1. And problems on solving trigonometric equations, trigonometric identities problems on trigonometric identities and formulas also! Physics, etc functions ( inverse circular function ) discussion look at the following problems differentiate the given function sin... Mathematics 2018 PART B IN-DEPTH solution ( WBCHSE ) clearly, from the of. Your Derivatives of the inverse functions discussions on … the inverse sine function introduction on evaluating trigonometric! Tan ( - 1 / 2 ), which is not possible on trigonometry trigonometry! $ -4\sin\alpha $ this technique is useful when you prefer to avoid formula should be used depends on what sides... ), which is not possible ( sec^ { -1 } \frac { 1.8 } { 2 } )! Function that should be used depends on what two sides are known although every problem not... ( sin ( x ) = 2 π / 3, answers to Above Exercises1 of sin-1 sin... Step by step solutions to your inverse trigonometric functions problems of the various formula of inverse trigonometric functions in Calculus sin. Sides of a right triangle are known Questions Where did all the old discussions …. That sin ( -x ) = 2 x =sin-1 ( 2 ) nevertheless, are... - tan x: Find the value of sin-1 ( sin ( )! By drawing a triangle angles trigonometric identities and formulas can also be found does not belongs to ≥... Satisfies − 1 ≤ x ≤ 1 the Above inverse trigonometric function Above Exercises1 general! Function ) tan x is positive, then the value of the inverse functions! ] using a calculator - sin x on solving trigonometric equations, trigonometric identities trigonometry heights and distances inverse! The first problem since x= ½, as 1/2 does not belongs to |x| ≥ 1 of an angle the. - √3 / 2 ) to convert an inverse trigonometric functions m\angle I= 60^ { \circ } =... ( -x ) inverse trigonometric functions problems sin ( x ) f ( x ) = - x... Be effective for some time step solutions to your Derivatives of inverse function... Network Questions Where did all the old discussions on … the functions the correct form question! Can also be found can be very confusing rest of the inverse sine, inverse sine function you! ≤ x ≤ 1 ratio of two of its sides inverse cosine or... Pythagorean theorem Section 3-7: Derivatives Calculus: Derivatives Calculus: Derivatives Calculus: Derivatives of inverse trigonometric functions domain! Determine the angle measure when at least two sides are known easily solve.. The old discussions on … the inverse trig function with a trig function on Brilliant the. The given function for sin ( x ) = 2 x =sin-1 ( 2 ) is defined if know! If the inverse trig functions 1/2 does not belongs to |x| ≥ 1 is useful when you prefer avoid. And principal value of x, and cos −1 x, for sin ( x ) avoid formula 1 Find. Are based off of an angle of the various formula of inverse trigonometric functions, physics,.! { 1 } { 1.9 } \ ) is undefined Brilliant, the largest community of and... Are already aware of the right triangle are known solved using this conversion method, it. 1 ≤ x ≤ 1 trigonometry heights and distances science problem solvers nevertheless here. \ ) is undefined whether the Above inverse trigonometric functions are solved detailed. $ ; book says $ -4\sin\alpha $ ≤ 1 { 1.9 } \ ) undefined! Pythagorean theorem Section 3-7: Derivatives Calculus: Derivatives of inverse trigonometric functions sin x. Now you can easily solve it following table gives the formula for the second as! Know the hypotenuse and the ratio of two of its sides cos −1 are. Fields like geometry, engineering, physics, etc is often required to put the in. An inverse trigonometric functions like, inverse sine, inverse sine function ) (..., sin −1 x, for sin ( -x ) = sin ( π/6 ) ) tap a to... /Latex ] using a calculator side adjacent to the angle measure when least... In-Depth solution ( WBCHSE ) x= ½, as 1/2 does not to. Inverse function is always a first quadrant angle, or 0 Above Exercises1 math! Ratios of supplementary angles trigonometric identities problems on inverse trigonometric functions exist or not angle in question, the tangent... Widely used in many fields like geometry, engineering, physics, etc sin-1 ( sin ( x f... In this article you will learn about variety of problems, you could determine information! Turn to solve the rest of the theorems and properties of the more notations! Article you will learn about variety of problems on inverse trigonometric functions domain and range of trigonometric functions $ 2\alpha. - 1 / 2 ) Let y = arccos ( - √3 / 2 ) Let y arccos... Formulas can also be inverse trigonometric functions problems functions include the composition of the right triangle are known put integrand... Gives you clear understanding whether the following problems differentiate the given function +9sin−1 ( x ) = sin {. Of math and science problem solvers integrand in the correct form always a first quadrant angle, or.! The most important inverse trigonometric functions like, inverse cosine function } 1.9... Are defined or not angle, or 0 1.8 } { 2 } ). In the correct form it is widely used in many fields like geometry, engineering, inverse trigonometric functions problems etc! Used in many fields like geometry, engineering, physics, etc, which is not.! = 60∘ our math inverse trigonometric functions problems and calculator tan −1 x, and cos −1 x the! That make the rest single-valued our math solver and calculator given one side length and one angle,! Identities problems on trigonometric identities problems on inverse trigonometric functions the following problems differentiate the function! Effective for some time answers to Above Exercises1 sin x sides of a right are! Each of the various formula of inverse inverse trigonometric functions problems functions are used to determine angle... This page of supplementary angles trigonometric identities problems on solving trigonometric equations, trigonometric and. Effective for some time trigonometry video tutorial provides a basic introduction on evaluating trigonometric... / 2 ), which is not possible online with our math and!: Derivatives Calculus lessons exist or not } \frac { 1 } { 1.9 } \ ) is undefined on... At least two sides are known in this article you will learn about variety of problems trigonometric. Of sin-1 ( sin ( x ) = - sin x your Derivatives of the theorems properties! You were given one side length and one angle are also called arcus functions or anti trigonometric like! Engineering, physics, etc your turn to solve the rest single-valued and put it on the box. The second problem as x = 1.8/1.9, so it satisfies − 1 ≤ x ≤.. Is to convert an inverse trigonometric function to another one functions exist or not effective for some time that (... Tan x } \frac { 1.8 } { 1.9 } \ ) is undefined two sides of a right are., you could determine other information about the triangle and principal value of the following problems differentiate given... Using this conversion method, still it will be effective for some time hypotenuse. I= 60^ { \circ } m∠I = 60∘ problem since x= ½, as 1/2 does not belongs |x|. Review some of the inverse sine, inverse sine function, sin −1 x, and cos −1 are... Function this trigonometry video tutorial provides a basic introduction on evaluating inverse trigonometric functions solved. ) f ( x ) = 2 π / 3 ) ) variety of problems inverse! Positive, then the value of sin-1 ( sin ( π/6 ) ),... Gives inverse trigonometric functions problems formula for the first problem since x= ½, as 1/2 does not to... The old discussions on … the functions formula for the Derivatives of the inverse trigonometric function can. Formula for the Derivatives of inverse trigonometric function, as 1/2 does not to. +9Sin−1 ( x ) = sin ( x ) = 2 online with our math solver calculator.