TAN(3)

NAME
       tan - tangent function

SYNOPSIS
       #include <<math.h>>

       double tan(double x);

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

SEE ALSO
       acos(3) asin(3) atan(3) atan2(3) cos(3) sin(3)