Problem:
Triangle

For given two sides of a triangle a and b and the angle C between them, calculate the following properties:

S: Area of the triangle

L: The length of the circumference of the triangle

h: The height of the triangle with side a as a bottom edge

Input

The length of a, the length of b and the angle C are given in integers.

Output

Print S, L and h in a line respectively. The output should not contain an absolute error greater than 10-4.

Sample Input

4 3 90

Sample Output

6.00000000
12.00000000
3.00000000

Solution in JAVA (judge verdict: Accepted)

import java.util.Scanner;

class Main {

	public static void main(String[] args) {
		try (Scanner sc = new Scanner (System.in)){
			double a = sc.nextDouble();
			double b = sc.nextDouble();
			double C = sc.nextDouble();
			
			C = Math.toRadians(C);

			double S,L,h;

			S = 0.5*a*b*Math.sin(C);
			L = a + b + Math.sqrt(Math.pow(a,2)+Math.pow(b,2)-(2*a*b*Math.cos(C)));
			h = b*Math.sin(C);

			System.out.printf("%.8f\n",S);
			System.out.printf("%.8f\n",L);
			System.out.printf("%.8f\n",h);
		}
	}
}