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NetBSD 6.1.5 - man page for tan (netbsd section 3)

TAN(3)				   BSD Library Functions Manual 			   TAN(3)

NAME
     tan, tanf -- tangent function

LIBRARY
     Math Library (libm, -lm)

SYNOPSIS
     #include <math.h>

     double
     tan(double x);

     float
     tanf(float x);

DESCRIPTION
     The tan() and tanf() functions compute the tangent of x (measured in radians).  A large mag-
     nitude 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() function returns 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 C89'').

BSD					   May 2, 1991					      BSD


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