#include <bits/stdc++.h>
using namespace std;
using i64 = int64_t;
using vi = vector<i64>;
using vvi = vector<vi>;

void solve() {
    double ans = 60;
    double X = -1, Y = -1;
    for (int i = 0; i < 6; i++) {
        double x, y;
        cin >> x >> y;
        if (x > 0.5 - 1e-11 && -1e-11 < y && y < 1) {
            X = x, Y = y;
            ans = min(ans, abs(atan(Y / X) * 180 / acos(-1)));
        }
    }
    assert(X != -1 && Y != -1 && ans < 50);
    cout << ans << endl;
}

int main() {
    ios::sync_with_stdio(false);
    cin.tie(nullptr);
    cout.tie(nullptr);
    cout.setf(ios::fixed);
    cout.precision(10);
    int t;
    cin >> t;
    while (t--) {
        solve();
    }
}