#include <bits/stdc++.h>
using namespace std;
int main(){
int t;cin>>t;
for(int i=0;i<t;i++){
double mi = 10000;
for(int j =0;j<6;j++){
double x,y;cin>>x>>y;
double th = atan2(y, x);
if (th >=0) mi = min(mi, th);
}
printf("%.9fn",  mi * 180.0 / acos(-1));
}
}