+ public static double asin(double x)\r
+ {\r
+ return System.Math.Asin(x);\r
+ }\r
+ public static double acos(double x)\r
+ {\r
+ return System.Math.Acos(x);\r
+ }\r
+ public static double atan(double x)\r
+ {\r
+ return System.Math.Atan(x);\r
+ }\r
+ public static double atan(double y, double x)\r
+ {\r
+ return System.Math.Atan2(y, x);\r
+ }\r
+ public static double atan2(double y, double x)\r
+ {\r
+ return System.Math.Atan2(y, x);\r
+ }\r