import java.util.Scanner;
public class Triangle {
public static void main(String[] args) {
Scanner sc = new Scanner(System.in);
double a = sc.nextDouble();
double b = sc.nextDouble();
int C = sc.nextInt();
double cRadian = C* Math.PI / 180;
double h = getHeight(b, cRadian);
double S = getArea(a, h);
double L = getDistanceAround(a, b, getLastSide(a, b, h, cRadian));
System.out.println(S);
System.out.println(L);
System.out.println(h);
}
public static double getHeight(double b, double c){
return b * Math.sin(c);
}
public static double getArea(double a, double h){
return (a * h) / 2;
}
private static double getLastSide(double a, double b, double h, double c){
return Math.sqrt((h * h) + (a - b * Math.cos(c)) * (a - b * Math.cos(c)));
}
public static double getDistanceAround(double a, double b, double d){
return a + b + d;
}
}