COS(3)							   BSD Library Functions Manual 						    COS(3)

NAME

     cos, cosf -- cosine function

LIBRARY

     Math Library (libm, -lm)

SYNOPSIS

     #include <math.h>

     double
     cos(double x);

     float
     cosf(float x);

DESCRIPTION

     The cos() and cosf() functions compute the cosine 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 cos() function returns the cosine value.

SEE ALSO

     acos(3), asin(3), atan(3), atan2(3), cosh(3), math(3), sin(3), sinh(3), tan(3), tanh(3)

STANDARDS

     The cos() function conforms to ANSI X3.159-1989 (``ANSI C89'').

BSD
								    May 2, 1991 							       BSD