COS

NAME
SYNOPSIS
DESCRIPTION
RETURN VALUE
CONFORMING TO
SEE ALSO

NAME

cos − cosine function

SYNOPSIS

#include <math.h>

double cos(double x);

DESCRIPTION

The cos() function returns the cosine of x, where x is given in radians.

RETURN VALUE

The cos() function returns a value between −1 and 1.

CONFORMING TO

SVID 3, POSIX, BSD 4.3, ISO 9899

SEE ALSO

acos(3), asin(3), atan(3), atan2(3), sin(3), tan(3)