Reference for Processing version 1.2. If you have a previous version, use the reference included with your software. If you see any errors or have suggestions, please let us know. If you prefer a more technical reference, visit the Processing Javadoc.
Name  atan() 


Examples  float a = PI/3; float t = tan(a); float at = atan(t); // Prints "1.0471976 : 1.7320509 : 1.0471976" println(a + " : " + t + " : " + at); float a = PI + PI/3.0; float t = tan(a); float at = atan(t); // Prints "4.1887903 : 1.7320513 : 1.0471977" println(a + " : " + t + " : " + at); 

Description  The inverse of tan(), returns the arc tangent of a value. This function expects the values in the range of Infinity to Infinity (exclusive) and values are returned in the range PI/2 to PI/2 .  
Syntax  atan(value) 

Parameters 


Returns  float  
Usage  Web & Application  
Related  tan() asin() acos() 