#include <iostream>
#include <iomanip>
#include <cmath>
using namespace std;

int main() {
	int n;
	double x, y, ang, min;
	
	cin >> n;
	for(int i=0;i<n;++i){
		min = 100;
		for(int j=0;j<6;++j){
			cin >> x >> y;
			ang = atan2(y,x) * 180 / M_PI;
			if(ang < 0) ang = 360 + ang;
			if(ang >= 50) ang -= 60;
			if(min > ang) min = ang;
		}
		cout << fixed << setprecision(10) << min << endl;
	}
	
	return 0;
}