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.\"     from: @(#)cos.3	5.1 (Berkeley) 5/2/91
.\"
.Dd May 2, 1991
.Dt COS 3
.Os
.Sh NAME
.Nm sin ,
.Nm sinf
.Nd sine functions
.Sh SYNOPSIS
.Fd #include <math.h>
.Ft double
.Fn sin "double x"
.Ft float
.Fn sinf "float x"
.Sh DESCRIPTION
The
.Fn sin
function computes the sine of
.Fa x
(measured in radians).
The
.Fn sinf
function is a single precision version of
.Fn sin .
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 sin
and
.Fn sinf
functions return the sine value.
.Sh SEE ALSO
.Xr acos 3 ,
.Xr asin 3 ,
.Xr atan 3 ,
.Xr atan2 3 ,
.Xr cosh 3 ,
.Xr math 3 ,
.Xr sinh 3 ,
.Xr tan 3 ,
.Xr tanh 3
.Sh STANDARDS
The
.Fn sin
function conforms to
.St -ansiC .