using System;

using System.Drawing;

public class Program

{

    public static void Main()

    {

        Point centerPoint = new Point(128, 96);

        double angle = 359; // angle in degrees (0-359); 0 is eastmost point

        int distance = 80;

​

        var result = PointInCircumference(centerPoint, angle, distance);

​

        Console.WriteLine(String.Format("Center: ({0}, {1}); Point: ({2}, {3})", centerPoint.X, centerPoint.Y, result.X, result.Y));

    }

    public static Point PointInCircumference(Point centerPoint, double angle, int distance)

    {

        var result = new Point(0, 0);

        result.Y = centerPoint.Y + (int)Math.Round(distance * Math.Sin(angle * (Math.PI/180)));

        result.X = centerPoint.X + (int)Math.Round(distance * Math.Cos(angle * (Math.PI/180)));

        return result;

    }

}