Manual of TAN(3) (v2.06)

NAME

tan, tanf, tanl - tangent function

SYNOPSIS

#include <math.h>

double tan(double x);

float tanf(float x);

long double tanl(long double x);

Link with -lm.

DESCRIPTION

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

CONFORMING TO

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

SEE ALSO

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