Reference for Wiring version 1.0 Build 0100+ If you have a previous version, use the reference included with your software. If see any errors or have any comments, let us know.
Name  atan() 


Description  Calculates the arc tangent of x. The atan(x) function expects the values of the x parameter to be provided between 1 and 1. Values are returned in the range PI/2, PI/2.  
Syntax  atan(x)


Parameters 


Returns  the arc tangent of x(a value from PI/2, PI/2) of the specified parameter x  
Usage  Web & Application  
Related  acos() asin() atan() atan2() cos() cosh() hypot() sin() sinh() tan() tanh() radians() degrees() 