import java.util.Arrays;
import java.util.HashSet;
import java.util.LinkedList;
import java.util.Scanner;
import java.util.Set;

public class Main {
	
	public static void main(String[] args){
		Scanner sc = new Scanner(System.in);
		
		final int T = sc.nextInt();
		
		for(int tt = 0; tt < T; tt++){
			final int size = 6;
			
			double[] xs = new double[size];
			double[] ys = new double[size];
			
			for(int i = 0; i < size; i++){
				xs[i] = sc.nextDouble();
				ys[i] = sc.nextDouble();
			}
			
			double min = Double.MAX_VALUE;
			
			for(int i = 0; i < size; i++){
				double x = xs[i] + 1;
				double y = ys[i];
				
				if(Math.abs(x) < 1e-12 && Math.abs(y) < 1e-12){
					x = 0;
					y = -1;
				}

				min = Math.min(min, Math.toDegrees(Math.atan2(y, x)));
				//System.out.println(x + " " + y + " => " + Math.toDegrees(Math.atan2(y, x)));
			}
			
			System.out.printf("%.10f\n", 180 + min * 2);
			
		}
		
	}
	
}