#include <algorithm>
#include <cfloat>
#include <cmath>
#include <cstdio>
#include <iostream>
using namespace std;

int main() {
	int T;
	cin >> T;
	for (int i = 0; i < T; i++) {
		double X, Y, a = DBL_MAX;
		for (int j = 0; j < 6; j++) {
			cin >> X >> Y;
			double b = atan(Y / X) / acos(-1.0) * 180.0;
			if (b < -1.0e-11) continue;
			a = min(b, a);
		}
		printf("%.6f\n", a);
	}
}