using System;
namespace HelloWorld
{
    class Hello
    {
        static void Main(string[] args)
        {
            double x_start = 0; // coords of start x
            double y_start = 50; // coords of start y
            double radius = 50;
            double x_end;
            double y_end;



            double input_percent = 50;
            double angle = 360 * input_percent / 100;  // angle in degrees
            double angle_rad = angle * Math.PI / 180; // angle converted to radians




            y_end = Math.Round(radius * Math.Cos(angle_rad), 2);
            x_end = Math.Round(radius * Math.Sin(angle_rad), 2);
            x_end += 50;
            y_end -= 50;
            y_end *= -1;


            Console.Read();

        }
    }
}