xref: /freebsd/lib/msun/man/tan.3 (revision 7f3dea244c40159a41ab22da77a434d7c5b5e85a)
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32.\"     from: @(#)tan.3	5.1 (Berkeley) 5/2/91
33.\" $FreeBSD$
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35.Dd May 2, 1991
36.Dt TAN 3
37.Os
38.Sh NAME
39.Nm tan ,
40.Nm tanf
41.Nd tangent functions
42.Sh SYNOPSIS
43.Fd #include <math.h>
44.Ft double
45.Fn tan "double x"
46.Ft float
47.Fn tanf "float x"
48.Sh DESCRIPTION
49The
50.Fn tan
51and the
52.Fn tanf
53functions compute the tangent of
54.Fa x
55(measured in radians).
56A large magnitude argument may yield a result
57with little or no significance.
58For a discussion of error due to roundoff, see
59.Xr math 3 .
60.Sh RETURN VALUES
61The
62.Fn tan
63function returns the tangent value.
64.Sh SEE ALSO
65.Xr acos 3 ,
66.Xr asin 3 ,
67.Xr atan 3 ,
68.Xr atan2 3 ,
69.Xr cos 3 ,
70.Xr cosh 3 ,
71.Xr math 3 ,
72.Xr sin 3 ,
73.Xr sinh 3 ,
74.Xr tanh 3
75.Sh STANDARDS
76The
77.Fn tan
78function conforms to
79.St -ansiC .
80