double enlem, boylam, yukseklik;
enlem = Convert.ToDouble(textBox1.Text);
boylam = Convert.ToDouble(textBox2.Text);
yukseklik = Convert.ToDouble(textBox3.Text);
if (radioButton1.Checked == true)
{
double wgs84a = 6378137.00, wgs84b = 6356752.31424518;
double A, B;
A = (Math.PI / 180) * enlem;
B = (Math.PI / 180) * boylam;
double ke2;
ke2 = ((wgs84a * wgs84a) - (wgs84b * wgs84b)) / (wgs84a * wgs84a);
double N;
N = (wgs84a / (Math.Sqrt(1 - (ke2 * ((Math.Sin(A)) * (Math.Sin(A)))))));
double X, Y, Z;
X = (N + yukseklik) * (Math.Cos(A)) * (Math.Cos(B));
Y = (N + yukseklik) * (Math.Cos(A)) * (Math.Sin(B));
Z = (((1 - ke2) * N + yukseklik)) * (Math.Sin(B));