# EXSLT - math:tan - Implementer Page

Version: 1 Status: implemented User Page: index.html XML Definition: math.tan.xml Function Package: math.tan.zip #### Function Syntax
    number math:tan(number)
The `math:tan` function returns the tangent of the number passed as an argument in radians. An implementation of this extension function in the EXSLT math namespace must conform to the behaviour described in this document. ## Implementations Built-in support for `math:tan` is available in the following XSLT processors:
Processor | Processor Version | Implemented Version
--- | --- | ---
4XSLT, from 4Suite. | 0.12.0a3 | 1
libxslt from Daniel Veillard et al. | 1.0.19 | 1
The following implementations of `math:tan` are available:
Language | Implemented Version | Creator | Date | Download
--- | --- | --- | --- | ---
Msxsl | 1 | James Fuller | 2001-06-09 | math.tan.msxsl.xsl
Javascript | 1 | James Fuller | 2001-06-09 | math.tan.js
## Change History Submitted: 2001-06-09 Creator: James Fuller(http://www.ruminate.co.uk) Returns the tangent value of the passed argument in radians.
Version | Modified | By | Details
--- | --- | --- | ---
1.1 | 2002-08-21 | Craig Stewart | Added 4XSLT and libxslt implementation to the list.
1.2 | 2002-11-12 | Craig Stewart | Updated 4XSLT version to 0.12.0a3.

http://www.exslt.org/math/functions/tan/math.tan.html last modified 2002-11-12