inverse circular functions

The inverse trigonometric functions are the inverse functions of the trigonometric functions, written cos^(-1) z, cot^(-1) z, csc^(-1) z, sec^(-1) z, sin^(-1) z, and tan^(-1) z. Alternate notations are sometimes used, as summarized in the following table.

inverse cosecant | inverse cosine | inverse cotangent | inverse function | inverse hyperbolic functions | inverse secant | inverse sine | inverse tangent | trigonometric functions