TAN(3) BSD Library Functions Manual TAN(3)NAME
tan — tangent function
SYNOPSIS
#include <math.h>
double
tan(double x);
DESCRIPTION
The tan() function computes the tangent of x (measured in radians). A
large magnitude argument may yield a result with little or no signifi‐
cance. 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), sin(3), sinh(3),
tanh(3), math(3),
STANDARDS
The tan() function conforms to ANSI X3.159-1989 (“ANSI C89”).
BSD June 4, 1993 BSD