Groovy atan()

class Example {
   static void main(String[] args) {
      double degrees = 45.0;
      double radians = Math.toRadians(degrees);  
		
      System.out.format("The value of pi is %.4f%n", Math.PI);
      System.out.format("The arctangent of %.4f is %.4f degrees %n", Math.cos(radians),
         Math.toDegrees(Math.atan(Math.sin(radians))));  
   } 
}