static float[] RotateVector(float[] v, float degrees)
		{
			float sin = (float)Math.Sin(degrees * 0.0174553294f);
			float cos = (float)Math.Cos(degrees * 0.0174553294f);

			float tx = v[0];
			float ty = v[1];


			return new float[] { (cos * tx) - (sin * ty), (sin * tx) + (cos * ty) };
		}



		static void Main(string[] args)
		{

			float lat = 53.1324886f;
			float lon = 23.1688403f;

			float R = 6378137;

			float distance = 100;

			float dn = 0;
			float de = 1;

			float[] rotation = RotateVector(new float[] { dn, de }, 180);

			rotation[0] = rotation[0] * distance;
			rotation[1] = rotation[1] * distance;

			float dLat = rotation[0] / R;
			float dLon = rotation[1] / (R * (float)Math.Cos(Math.PI * lat / 180));


			float latO = lat + dLat * 180 / (float)Math.PI;
			float lonO = lon + dLon * 180 / (float)Math.PI;

			Console.WriteLine(latO+" "+ lonO);

			Console.ReadKey();
		}