inverese trigonometry function imp
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. Inverse trigonometric functions are widely used in engineering, navigation, physics, and geometry.
Integrating the derivative and fixing the value at one point gives an expression for the inverse trigonometric function as a definite integral.