# $EPIC: tan.txt,v 1.3 2006/08/20 17:37:08 sthalik Exp $
======Synopsis:======
$[[tan]](//<number>//)

======Technical:======
  * Returns the tangent of the angle of //<number>// radians.
  * If the <number> argument is omitted the empty string is returned.
  * As always, the return value is limited to 6 decimal places.
  * As always, DOM or RANGE means there was an error.

======Returns:======
The tagent of an angle 

======History:======