Write a program in JAVA that will input the lengths of the two legs of a triangl

Question

Write a program in JAVA that will input the lengths of the two legs of a triangle using Dialog Boxes. Then calculate the hypotenuse and the six trig functions for one of the angles of the triangle. Display all information in a Message Box.

All calculations should be done using Methods. Your program should be well documented both internally and externally.

Internal Documentation         3

Use of Methods 3

Efficient Coding                      3

Correctness of Program        7

Input (GUI’s) 2

Output (GUI’s)            2

Explanation / Answer

code is explained through comments after almost every line of code, so please refer to code and for any further query about this please comment

//***************code***********************

//import java.text.DecimalFormat;

import javax.swing.JOptionPane;

public class Hypoteneus {

   public static void main(String[] args) {
       // TODO Auto-generated method stub

       String fn=JOptionPane.showInputDialog("Enter First Number");   //dialog box for asking user input ---first side of a triangle
       String sn=JOptionPane.showInputDialog("Enter Second Number");   //dialog box for asking user input ---Second side of a triangle
       double a=Double.parseDouble(fn);       //converting string into double
       double b=Double.parseDouble(sn);       //converting string into double
       double sq1=Math.pow(a, 2);       //method to calculate square of a number --- calculating square of first side
       double sq2=Math.pow(b, 2);        //calculating square of second side
       double hyp=Math.sqrt(sq1+sq2); //Method used from Maths class....calculates square root o a number
       JOptionPane.showMessageDialog(null, "Hypotenueus is "+hyp);   //dialog box to show hypoteneus
       JOptionPane.showMessageDialog(null, "Sin theta is: "+sin_calc(b,hyp)+" Cos theta is: "+cos_calc(a, hyp)+" Tan theta is "+tan_calc(a, b)+" Cot theta is: "+cot_calc(a, b)+" Cosec theta is: "+cosec_calc(b, hyp)+" Sec theta is "+sec_calc(a, hyp));
       //JOptionPane.showMessageDialog(null, sin_calc(b, hyp));
   }
   //Methods to calculate all six trigonometric functions
   // all answers are calculated with the help of known sides
   public static double sin_calc(double b, double hyp)
   {
       return (b/hyp);
   }
   public static double cos_calc(double a, double hyp)
   {
       return (a/hyp);
      
   }
   public static double tan_calc(double a, double b)
   {
       return (b/a);
      
   }
   public static double cot_calc(double a, double b)
   {
       return (a/b);
      
   }
   public static double cosec_calc(double b, double hyp)
   {
       return (hyp/b);
      
   }
   public static double sec_calc(double a, double hyp)
   {
       return (hyp/a);
      
   }

}

Related Questions

Navigate

• Browse (All)
• Browse W
• Subjects

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.