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cos, cosf, cosl - cosine function
#include <math.h>
double cos(double x);
float cosf(float x);
long double cosl(long double x);
The cos() function returns the
cosine of x, where x is given in radians.
The cos() function
returns a value between -1 and 1.
SVID 3, POSIX, BSD 4.3, ISO
9899. The float and the long double variants are C99 requirements.
acos(3)
,
asin(3)
, atan(3)
, atan2(3)
, sin(3)
, tan(3)
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