how to solve trigonometric functions Calculator

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Trigonometric function calculator is a tool used to find the trigonometric rations. We have six trigonometric functions for any angles; these functions are called circular functions. We used these trigonometric functions to calculate of sides of triangle. In study of triangles and modeling we mainly sued sin, cos and tangent functions. Six functions are sin x, cos x, tan x, sec x, cot x,  csc x.

Example 1: - If we have sin x = 4/5 then find the value of cos x.
 
Solution: - Some of the steps involved are as follow:-

Step 1:  From the problem we can write             




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