1 #include<stdio.h>
2 #include<math.h>
3 int main(){
4
5 int a,b,c;
6 float s,l,h;
7
8 scanf("%d %d %d",&a,&b,&c);
9
10 s=(float)a*b*sinf((float)c/360*2*M_PI)/2;
11 l=(float)a+b+sqrt(a*a+b*b-2*a*b*cosf((float)c/360*2*M_PI));
12 h=(float)2*s/a;
13
14 printf("%f\n%f\n%f\n",s,l,h);
15
16 return(0);
17 }