10025 - Triangle

#include <cmath>
#include <cstdio>
#include <iostream>
using namespace std;

void Slove(double a, double b, double angle)	{
	double rad=(angle/180)*M_PI;
	double S=a*b*sin(rad)/2;
	double L=a+b+sqrt( pow(a,2)+pow(b,2)-2*a*b*cos(rad) );
	double h=b*sin(rad);

	printf ("%.8lf\n%.8lf\n%.8lf\n", S, L, h);
}

int main(void)	{
	double a, b, angle;

	cin >> a >> b >> angle;
	Slove(a,b,angle);
	return 0;
}

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