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哪位高手帮忙下呀,没理由错的啊!!郁闷ING#include<iostream>
#include<math.h>
using namespace std;
void main()
{
int n,i=1;
cin>>n;
for(i=1;i<n+1;i++)//while(n--)
{
double R;
int num;
cin>>R>>num;
double r=0.0,t=0.0;
double pi=3.1415926;
t=sin(pi/num);
r=R*t/(t+1.0);
printf("Scenario #%d:\n%.3f\n\n",i,r);
}
}
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