Java program to find angles of triangle if two angles are given













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Write a Java Program to input two angles from user and find third angle of the triangle. How to find all angles of a triangle if two angles are given by user using Java programming. Java program to calculate the third angle of a triangle if two angles are given.








Required knowledge

Arithmetic operators, Data types, Basic input/output


Properties of triangle

Sum of angles of a triangle is 180°.

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Let us apply basic math to derive formula for third angle. If two angles of a triangle are given, then third angle of triangle is given by -

c=180-(a+b)


Logic to find third angle of a triangle

Step by step descriptive logic to find third angle of a triangle -

  1. Input two angles of triangle from user. Store it in some variable say a and b.

  2. Compute third angle of triangle using formula c = 180 - (a + b).

  3. Print value of third angle i.e. print c.

Program to find angles of a triangle
/**
 * Java program to find all angles of a triangle if two angles are given
 */

import java.util.Scanner;
class Test
{
public static void main(String args[])
{
    int a, b, c;
    Scanner op=new Scanner(System.in);
    /* Input two angles of the triangle */
    System.out.print("Enter First angles of triangle: ");
    a=op.nextInt();
    System.out.print("Enter Second angles of triangle: ");
    b=op.nextInt();;

    /* Compute third angle */
    c = 180 - (a + b);

    /* Print value of the third angle */
    System.out.println("Third angle of the triangle = "+c);
}
}




Output:

Enter First angles of triangle: 70
Enter Second angles of triangle: 80
Third angle of the triangle = 30





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