Write a java program to estimate the Pole Height

Write a java program to estimate the Pole Height.

(SOURCE CODE)

import java.text.*;

import java.util.*;

class PoleHeight

{

      public static void main( String[] args )

         {

             double height;                          

             double distance;                        

             double alpha;            

             double beta;                

             double alphaRad;            

             double betaRad;                  

          Scanner scanner = new Scanner(System.in);

          scanner.useDelimiter(System.getProperty("line.separator"));

     System.out.print("Angle alpha (in degrees):"); 

     alpha = scanner.nextDouble();

     System.out.print("Angle beta (in degree):");

     beta = scanner.nextDouble();

     System.out.print("Distance between points A and B (ft):");

     distance = scanner.nextDouble();

          alphaRad = Math.toRadians(alpha);       

          betaRad = Math.toRadians(beta);

          height = ( distance * Math.sin(alphaRad) * Math.sin(betaRad) )

                   /

                     Math.sqrt( Math.sin(alphaRad + betaRad)

                   *

                     Math.sin(alphaRad - betaRad) );

          DecimalFormat df = new DecimalFormat("0.000");

          System.out.println("lnln Estimating the height of the pole"  

                               + "\n\n"

                               + "Angle at point A (deg): " + df.format(alpha) + "\n"

                               + "Angle at point B (deg): " + df.format(beta) + "\n"

                               + "Distance between A and B (ft): " + df.format(distance)+ "\n"

                               + "Estimated height (ft): " + df.format(height));

         }

}