#include <bits/stdc++.h>
using namespace std;

int main(){
    ios_base::sync_with_stdio(false);
    cin.tie(nullptr);
    
    int T; cin >> T;
    while(T--){
        double answer = 1000;
        for(int i=0; i<6; i++){
            double x,y; cin >> x >> y;
            double now = atan2(y,x);
            if(now < -0.01) continue;
            answer = min(answer,now);
        }
        cout << fixed << setprecision(20) << answer*180/3.14159265358979 << "\n";
    }
}