πの求め方 こう書いてもおｋ using System; public class CS0512 { public static void Main() { for (int i = 11; i <= 31; i += 2) { double radian = 1; double x2 = radian * radian; // 自作の逆正接関数 double d1 = myAtan(radian, x2, i, 0.0); // i…