2011 Khronos Group
acos 3G
acos return the arccosine of the parameter

## Declaration

genType `acos` genType x

## Parameters

x

  Specify the value whose arccosine to return.

## Description

`atan` returns the angle whose trigonometric cosine is x. The range of values returned by `acos` is 0 . The result is undefined if x 1.

## Version Support

#VARTABLECOLS#
#FUNCTABLEHEADER#
acos#newin11#

## See Also

sin, cos, asin, tan

## Copyright

Copyright 2011 Khronos Group. This material may be distributed subject to the terms and conditions set forth in the Open Publication License, v 1.0, 8 June 1999. http://opencontent.org/openpub/.