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) {
		Scanner sc = new Scanner(System.in);

		double a = sc.nextDouble();
		double b = sc.nextDouble();
		double c = sc.nextDouble();

		double h = b * Math.sin(Math.toRadians(c));
		double S = a * h / 2;
		double L = a + b + Math.sqrt(a*a + b*b - 2*a*b*Math.cos(Math.toRadians(c)));

		System.out.println(S);
		System.out.println(L);
		System.out.println(h);
	}

}