import java.util.Scanner;

public class ComputeAngles2 {

    public static void main( String[] args )
    {
        Scanner in = new Scanner( System.in );
        System.out.print( "Please enter the lengths of the three edges: " );
        double a = in.nextDouble();
        double b = in.nextDouble();
        double c = in.nextDouble();
        in.close();

        double angleA = Math.acos( (a * a - b * b - c * c) / (-2 * b * c) );
        double angleB = Math.acos( (b * b - a * a - c * c) / (-2 * a * c) );
        double angleC = Math.acos( (c * c - b * b - a * a) / (-2 * b * a) );
        System.out.println( "Angle A is " + Math.toDegrees( angleA ) );
        System.out.println( "Angle B is " + Math.toDegrees( angleB ) );
        System.out.println( "Angle C is " + Math.toDegrees( angleC ) );
    }

}