1.56 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.