Extended Trig Methods

[Kernelpanic]

This formula is in the wiki, but it always gives an error message:

Code: (Select All)

Atn(1 / Sqrt(1 - (x * x))) + (Sgn(x) - 1) * (2 * Atn(1)) 

Why? I have not find any explains in the Internet.

Code: (Select All)

Dim As Double x, y, Arcc



x = 1.5

y = 1.5



Print "1. "; _Arccsc(x)

Print "1A. "; Atn(1 / Sqr(1 - x * x)) + (Sgn(x) - 1) * (2 * Atn(1))

Print

Print "2. "; _Asin(1 / x)





Print "3. "; _Arccsc(y)

Print "4. "; Atn(1 / Sqr(1 - y * y)) + (Sgn(y) - 1) * (2 * Atn(1))

Print



Print "5. "; _Asin(1 / x)

Print

Arcc = Atn(1 / Sqr(1 - (x * x))) + (Sgn(x) - 1) * (2 * Atn(1))

Print "6. "; Arcc

And the last result. . . Maybe a math guru can explain it.