Library Math Operations in Java

public class abejeroact52 {
public static void main(String []Args) {

System.out.println(Math.toDegrees(Math.PI/2));
System.out.println(Math.toRadians(30));
System.out.println(Math.sin(0));
System.out.println(Math.sin(Math.toRadians(270)));
System.out.println(Math.sin(Math.PI/6));
System.out.println(Math.sin(Math.PI/2));
System.out.println(Math.cos(0));
System.out.println(Math.cos(Math.PI/6));
System.out.println(Math.cos(Math.PI/2));
System.out.println(Math.acos(0.5));

}}