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

const double EPS = 1e-8;

signed main(){
  int T; cin >> T;
  for( int kase = 0; kase < T; ++kase ){
    double ans = 1e9;
    for( int i = 0; i < 6; ++i ){
      double X, Y; cin >> X >> Y;
      if( fabs( X ) < EPS ) continue;
      double rad = atan( Y / X );
      double deg = rad * 180.0 / acos( -1.0 );
      if( deg + EPS >= 0.0 )
        ans = min( ans, deg );
    }
    cout << fixed << setprecision( 10 ) << ans << endl;    
  }  
  return 0;
}