TrigLength

TrigLength.java

import java.util.Scanner;
import java.text.DecimalFormat;


public class TrigLength

{
	public static void main (String[] args) {

  	  	Scanner scan = new Scanner(System.in);
		int distance_trigpoints, angle_from_trigpoint1, angle_from_trigpoint2;
		double distance_point1, distance_point2;
	
		System.out.print("Enter the distance between the trig points and then click ENTER: ");
		distance_trigpoints = scan.nextInt();

		System.out.print("Enter the angle in degrees from trig point 1 and then click ENTER: ");
		angle_from_trigpoint1 = scan.nextInt();  

		System.out.print("Enter the angle in degrees from trig point 2 and then click ENTER: ");
		angle_from_trigpoint2 = scan.nextInt();

		distance_point1 = (distance_trigpoints * Math.sin(angle_from_trigpoint2  * Math.PI/180)) / (Math.sin((angle_from_trigpoint1  * Math.PI/180) + (angle_from_trigpoint2  * Math.PI/180)));
		distance_point2 = (distance_trigpoints * Math.sin(angle_from_trigpoint1  * Math.PI/180)) / (Math.sin((angle_from_trigpoint1  * Math.PI/180) + (angle_from_trigpoint2  * Math.PI/180)));
	 
		System.out.println("The distance from point 1 is " + (new DecimalFormat("0.00")).format(distance_point1)  + ": ");
		System.out.println("The distance from point 2 is " + (new DecimalFormat("0.00")).format(distance_point2) + ": ");

	
		if (distance_trigpoints < 0)  // <- No semicolumn here!
			System.out.println("You have entered a negative distance. Please enter a positive integer");
		if (angle_from_trigpoint1 < 0)
			System.out.println("Negative angle not possible. Please enter a positive integer");
		if (angle_from_trigpoint2 < 0)
			System.out.println("Negative angle not possible. Please enter a positive integer");
                                                                                               
	}
}