A Most Ingenious Pair a' Twins

Introduction

This asks you to plug numbers into an equation and get the result.

Solutions

Idea

Do some basic algebra, and compute the desired result.

Gotchas

be sure to use %.3f to print to three places

Code

Solution - Java

import java.util.*;
public class a {
	Scanner in=new Scanner(System.in);
	public static void main(String[] args) {
		new a().go();
	}
	private void go() {
		while(true){
			double te=in.nextDouble(),tr=in.nextDouble();
			if(te==0&&tr==0)break;
			System.out.printf("%.3f\n", Math.sqrt((1-tr/te*tr/te)));
		}
	}
}