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



NAME
       cos, cosf, cosl - cosine function

SYNOPSIS
       #include <&lt;math.h>&gt;

       double cos(double x);
       float cosf(float x);
       long double cosl(long double x);

       Link with -lm.

DESCRIPTION
       The  cos()  function returns the cosine of x, where x is given in radi-
       ans.

RETURN VALUE
       The cos() function returns a value between -1 and 1.

CONFORMING TO
       SVr4, 4.3BSD, C99.  The float and long double variants are C99 require-
       ments.

SEE ALSO
       acos(3), asin(3), atan(3), atan2(3), ccos(3), sin(3), tan(3)

COLOPHON
       This  page  is  part of release 3.05 of the Linux man-pages project.  A
       description of the project, and information about reporting  bugs,  can
       be found at http://www.kernel.org/doc/man-pages/.



                                  2002-07-27                            COS(3)