using System;

public class Program

{

    public static void Main()

    {

        Console.WriteLine("Kosinova věta");

        Console.WriteLine("Zadej stranu a: ");

        double a = double.Parse(Console.ReadLine());

        Console.WriteLine("Zadej stranu b: ");

        double b = double.Parse(Console.ReadLine());

        Console.WriteLine("Zadej úhel gama: ");

        double gama = double.Parse(Console.ReadLine());

        double rad = (gama * Math.PI) / 180;

        Console.WriteLine("Velikost strany c je " + (Math.Sqrt(Math.Pow(a, 2) + Math.Pow(b, 2) - 2 * a * b* Math.Cos(rad))));

​

​

​

​

​

​

    }

}