Convert from Radians to Degrees in Java?

Question

I'm trying to get the alpha angle in degrees from x,y when user creates an object. I wrote the following constructor: public class Point { private double _radius , _alpha; public Point ( int x , int y ) { _radius = Math.sqrt ( Math.pow(x,2) + Math.pow (y,2) ) ; _alpha = ( ( Math.atan (y/x) ) * 180 ) / Math.PI; } } 1. Am I right that _alpha is now an angle in degrees instead of radians that I got from the atan() method ? 2. Is there a simple way to do so ? Thanks !

Answer 1

Other than checking for division by zero, you are definitely on the right track.

Some other things to consider:

(3 , -sqrt(3)) ---> the angle is either 330 or 150...

what does the arctangent function in java return