Har brug for eksempel til invers -Sinus, -Cosinus og -Tangent

Taken from (Access) help. It will be the same a sin VB

The following is a list of nonintrinsic math functions that can be derived from the intrinsic math functions:

Function    Derived equivalents
Secant    Sec(X) = 1 / Cos(X)
Cosecant    Cosec(X) = 1 / Sin(X)
Cotangent    Cotan(X) = 1 / Tan(X)
Inverse Sine    Arcsin(X) = Atn(X / Sqr(-X * X + 1))
Inverse Cosine    Arccos(X) = Atn(-X / Sqr(-X * X + 1)) + 2 * Atn(1)
Inverse Secant    Arcsec(X) = Atn(X / Sqr(X * X – 1)) + Sgn((X) – 1) * (2 * Atn(1))
Inverse Cosecant    Arccosec(X) = Atn(X / Sqr(X * X - 1)) + (Sgn(X) – 1) * (2 * Atn(1))
Inverse Cotangent    Arccotan(X) = Atn(X) + 2 * Atn(1)
Hyperbolic Sine    HSin(X) = (Exp(X) – Exp(-X)) / 2
Hyperbolic Cosine    HCos(X) = (Exp(X) + Exp(-X)) / 2
Hyperbolic Tangent    HTan(X) = (Exp(X) – Exp(-X)) / (Exp(X) + Exp(-X))
Hyperbolic Secant    HSec(X) = 2 / (Exp(X) + Exp(-X))
Hyperbolic Cosecant    HCosec(X) = 2 / (Exp(X) – Exp(-X))
Hyperbolic Cotangent    HCotan(X) = (Exp(X) + Exp(-X)) / (Exp(X) – Exp(-X))
Inverse Hyperbolic Sine    HArcsin(X) = Log(X + Sqr(X * X + 1))
Inverse Hyperbolic Cosine    HArccos(X) = Log(X + Sqr(X * X – 1))
Inverse Hyperbolic Tangent    HArctan(X) = Log((1 + X) / (1 – X)) / 2
Inverse Hyperbolic Secant    HArcsec(X) = Log((Sqr(-X * X + 1) + 1) / X)
Inverse Hyperbolic Cosecant    HArccosec(X) = Log((Sgn(X) * Sqr(X * X + 1) + 1) / X)
Inverse Hyperbolic Cotangent    HArccotan(X) = Log((X + 1) / (X – 1)) / 2
Logarithm to base N    LogN(X) = Log(X) / Log(N)

It wasn\'t that i was looking for! I already have these!

but i found out that can use!

number = Atn(-X / sqr(-X * X + 1)) + 2 * Atn(1)
number * 180 / 3.14
and now it is working
but thanx anyway!