TAN(3) BSD Programmer's Manual TAN(3)NAME
tan, tanf - tangent functions
SYNOPSIS
#include <math.h>
double
tan(double x);
float
tanf(float x);
DESCRIPTION
The tan() and the tanf() functions compute the tangent of x (measured in
radians). A large magnitude argument may yield a result with little or
no significance. For a discussion of error due to roundoff, see math(3).
RETURN VALUES
The tan() function returns the tangent value.
SEE ALSOacos(3), asin(3), atan(3), atan2(3), cos(3), cosh(3), math(3),
sin(3), sinh(3), tanh(3)STANDARDS
The tan() function conforms to ANSI C X3.159-1989 (``ANSI C '').
BSDI BSD/OS May 2, 1991 1