CODEWITHSUNDEEP
javapythagorean
Kyle
Kyle

Reputation: 57

Calculate third side of a triangle using methods

Ask the user for 2 sides of a triangle and then print out the length of the third side, as calculated by a method. Write a method to find the length of the third side using the Pythagorean theorem.

I'm new to java and I am suck with the following code which may be way off...

import java.util.*;
public class Tri8 {
   public static void main(String[] args) {
      Scanner input = new Scanner(System.in);

      System.out.println("Enter two numbers:");
      int a = input.nextInt();
      int b = input.nextInt();

      System.out.println(pythagoraen(a, b));

   }

   //Method goes here
   public static int pythagoraen(int x, int y) {
      Math.pow(x, y);
      int z = Math.sqrt(x, y);
      Math.sqrt(x, y);

   }
}

Upvotes: 0

Views: 3807

Answers (3)

Mureinik
Mureinik

Reputation: 310983

Assuming you meant to find the hypotenuse of a right-angled triangle using the pythagorean theorem, you need to return the root of the sum of squares of both other sides:

public static double pythagoraen(int x, int y) {
   return Math.sqrt(Math.pow(x, 2) + Math.pow(y, 2));
}

Upvotes: 2

Kore
Kore

Reputation: 436

private static double pythag(double x, double y){
    return Math.sqrt(x*x + y*y);
}

or if you want to use math.pow, you can replace x*x with Math.pow(x, 2)

in java calling math.sqrt and math.pow dont directly edit the variables, they actually return a value that you can use, for instance math.pow takes in two double, the first is the base and the second is the exponent, so Math.pow(2,3) would be the same to you and me as 2^3

Upvotes: 1

Peter Zhu
Peter Zhu

Reputation: 461

Here's the fixed code:

import java.util.*;
public class Tri8 {
   public static void main(String[] args) {
      Scanner input = new Scanner(System.in);

      System.out.println("Enter two numbers:");
      int a = input.nextInt();
      int b = input.nextInt();

      System.out.println(pythagoraen(a, b));

   }

   //Method goes here
   public static int pythagoraen(int x, int y) {
      return Math.sqrt(Math.pow(x, 2) + Math.pow(y, 2));
   }
}

Upvotes: -1

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