/**
 *   @FileName	a.cpp
 *   @Author	kanpurin
 *   @Created	2020.05.22 17:34:30
**/

#include "bits/stdc++.h" 
using namespace std; 
typedef long long ll;

int main() {
    int t;
    cin >> t;
    for (int i = 0; i < t; i++) {
        vector< pair< double, double > > a(6);
        for (int j = 0; j < 6; j++) {
            cin >> a[j].first >> a[j].second;
        }
        vector< double > kaku;
        for (int j = 0; j < 6; j++) {
            if (a[j].first >= 0.717505778100648 && a[j].second >= -0.000000000001) {
                kaku.push_back((a[j].second / a[j].first));
            }
        }
        sort(kaku.begin(), kaku.end());
        printf("%.10f",atan(kaku[0])*180/acos(-1));
    }
    return 0;
}