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A Sin H Function
Math Trig Complex Class

Public Function ASinH( _
    ByVal vX As Variant _
    ) As Variant

"Inverse Hyperbolic Sine"
Angle whose hyperbolic sine is X.
Inverse of the SinH function.

Examples: 
    ASinH(-10) = -2.99822295029798
    ASinH(-2) = -1.44363547517881
    ASinH(-1) = -0.881373587019543
    ASinH(0) = 0
    ASinH(1) = 0.881373587019543
    ASinH(2) = 1.44363547517881
    ASinH(10) = 2.99822295029797
    ASinH("2.3|-4.5") = "2.3075846192625|-1.09022846498264"
See also: 
    ASin Function
    SinH Function
    ACosH Function
    ATanH Function
    HArcsin Function
vX: Function returns the principal value of the angle whose hyperbolic sine (expressed in radians) is vX. Function returns Null if vX is Null or cannot be fixed up to a real or complex number (as defined by the ComplexStringToReals function). Complex numbers are represented within strings as "R|I" where R is the real part and I is the imaginary part.
Note: Microsoft named this function HArcsin within their Derived Math Function help topic.

Definition: 

    Logarithm(Sqrt(X^2 + 1) + X)

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