1.\" Copyright (c) 1991 The Regents of the University of California. 2.\" All rights reserved. 3.\" Redistribution and use in source and binary forms, with or without 4.\" modification, are permitted provided that the following conditions 5.\" are met: 6.\" 1. Redistributions of source code must retain the above copyright 7.\" notice, this list of conditions and the following disclaimer. 8.\" 2. Redistributions in binary form must reproduce the above copyright 9.\" notice, this list of conditions and the following disclaimer in the 10.\" documentation and/or other materials provided with the distribution. 11.\" 3. Neither the name of the University nor the names of its contributors 12.\" may be used to endorse or promote products derived from this software 13.\" without specific prior written permission. 14.\" 15.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 16.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 17.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 18.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 19.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 20.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 21.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 22.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 23.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 24.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 25.\" SUCH DAMAGE. 26.\" 27.Dd April 1, 2020 28.Dt SIN 3 29.Os 30.Sh NAME 31.Nm sin , 32.Nm sinf , 33.Nm sinl 34.Nd sine functions 35.Sh LIBRARY 36.Lb libm 37.Sh SYNOPSIS 38.In math.h 39.Ft double 40.Fn sin "double x" 41.Ft float 42.Fn sinf "float x" 43.Ft long double 44.Fn sinl "long double x" 45.Sh DESCRIPTION 46The 47.Fn sin , 48.Fn sinf , 49and 50.Fn sinl 51functions compute the sine of 52.Fa x 53(measured in radians). 54A large magnitude argument may yield a result with little 55or no significance. 56.Sh RETURN VALUES 57The 58.Fn sin , 59.Fn sinf , 60and 61.Fn sinl 62functions return the sine value. 63.Sh SEE ALSO 64.Xr acos 3 , 65.Xr asin 3 , 66.Xr atan 3 , 67.Xr atan2 3 , 68.Xr cos 3 , 69.Xr cosh 3 , 70.Xr csin 3 , 71.Xr math 3 , 72.Xr sinh 3 , 73.Xr tan 3 , 74.Xr tanh 3 75.Sh STANDARDS 76These functions conform to 77.St -isoC-99 . 78.Sh HISTORY 79The 80.Fn sin 81function first appeared in 82.At v1 . 83