config root man

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.\"     from: @(#)tan.3	5.1 (Berkeley) 5/2/91
.\" $FreeBSD: release/9.1.0/lib/msun/man/tan.3 176359 2008-02-17 07:32:44Z das $
.\"
.Dd January 24, 2008
.Dt TAN 3
.Os
.Sh NAME
.Nm tan ,
.Nm tanf ,
.Nm tanl
.Nd tangent functions
.Sh LIBRARY
.Lb libm
.Sh SYNOPSIS
.In math.h
.Ft double
.Fn tan "double x"
.Ft float
.Fn tanf "float x"
.Ft long double
.Fn tanl "long double x"
.Sh DESCRIPTION
The
.Fn tan ,
.Fn tanf ,
and
.Fn tanl
functions compute the tangent of
.Fa 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
.Xr math 3 .
.Sh RETURN VALUES
The
.Fn tan ,
.Fn tanf ,
and
.Fn tanl
functions return the tangent value.
.Sh SEE ALSO
.Xr acos 3 ,
.Xr asin 3 ,
.Xr atan 3 ,
.Xr atan2 3 ,
.Xr cos 3 ,
.Xr cosh 3 ,
.Xr math 3 ,
.Xr sin 3 ,
.Xr sinh 3 ,
.Xr tanh 3
.Sh STANDARDS
These functions conform to
.St -isoC-99 .