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  acos() 


Description  Calculates the arc cosine of x. The acos(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  acos(x)


Parameters 


Returns  the arc cosine 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() 