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cos(3) [redhat man page]

COS(3)							     Linux Programmer's Manual							    COS(3)

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) 1993-06-08 COS(3)

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