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 Ruby (judge verdict: Wrong Answer)

a,b,c=gets.split.map(&:to_f)
h=b*Math.sin(Math::PI*c/180)
puts a*h*1/2
puts a+b+(h**2+(a-b*Math.cos(Math::PI*c/180))**2)**(1/2.0)