---

Manual Reference Pages  - TAN (3)

---

tan, tanf, tanl - tangent function

CONTENTS

Synopsis
Description

#include <math.h> 



double tan(double x); 



float tanf(float x); 



long double tanl(long double x); 

The tan() function returns the tangent of x, where x is given in radians.

SVID 3, POSIX, BSD 4.3, ISO 9899. The float and the long double variants are C99 requirements.

acos(3), asin(3), atan(3), atan2(3), cos(3), sin(3)

Jump to page    or go to Top of page |  Section 3 |  Main Index.