#include<iostream>
#include<cmath>
#include<stdio.h>
using namespace std;

int main(){
    double a,b,c,s,l,h,rad;
    double PI=acos(-1);
    cin>>a>>b>>c;
    rad=c*PI/180.0;
    s=a*b*sin(rad)/2.0;
    l=a+b+sqrt(a*a+b*b-2.0*a*b*cos(rad));
    h=2.0*s/a;
    printf("%f\n%f\n%f\n",s,l,h);

    return 0;
}
