TAN(3)                  System Library Functions Manual                 TAN(3)

NAME
     tan, tanf - tangent functions

SYNOPSIS
     #include 

     double
     tan(double x);

     float
     tanf(float x);

DESCRIPTION
     The tan() function computes the tangent of x (measured in radians).  The
     tanf() function is a single precision version of tan().  A large magni-
     tude argument may yield a result with little or no significance.  For a
     discussion of error due to roundoff, see math(3).

RETURN VALUES
     The tan() and tanf() functions return the tangent value.

SEE ALSO
     acos(3), asin(3), atan(3), atan2(3), cos(3), cosh(3), math(3), sin(3),
     sinh(3), tanh(3)

STANDARDS
     The tan() function conforms to ANSI X3.159-1989 (``ANSI C'').

Interix                           May 31 2007                          Interix