调用System.Math.Asin得出"NAN"值?我想要的是双精度型的!
代码如下:
int Ixuan = int.Parse(txtXuan.Text), Igong = int.Parse(txtGong.Text);
double Dbhu ,Dbbr,Dbmj,Dbcan;
Dbcan = (double)(System.Math.Asin(4 * Igong * Ixuan / (4 * Igong ^ 2 + Ixuan ^ 2)));//Dbcan的值调试出来不是数字类型???