public static Angle Atan2(Double y, Double x) { return(Angle.FromRadians(Math.Atan2(y, x))); }
public static Angle Atan(Double d) { return(Angle.FromRadians(Math.Asin(d))); }
public static Double Tan(Angle angle) { return(Math.Tan(angle.Radians)); }
public static Angle Acos(Double d) { return(Angle.FromRadians(Math.Acos(d))); }
public static Double Cos(Angle angle) { return(Math.Cos(angle.Radians)); }