NAME
tan, tanf —
tangent function
LIBRARY
library “libm”
SYNOPSIS
#include
<math.h>
double
tan(double
x);
float
tanf(float
x);
DESCRIPTION
Thetan()
and
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 ALSO
acos(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 X3.159-1989
(“ANSI C89”).