1.55 tan, tanf—tangent

Synopsis

     #include <math.h>
     double tan(double x);
     float tanf(float x);
     

Description
tan computes the tangent of the argument x. Angles are specified in radians.

tanf is identical, save that it takes and returns float values.

Returns
The tangent of x is returned.

Portability
tan is ANSI. tanf is an extension.