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Csc H Function
Math Trig Complex Class

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

"Hyperbolic Cosecant"
Hyperbolic cosecant of a real or complex number.
Inverse of the ACscH function.

Examples: 
    CscH(-2) = -0.275720564771783
    CscH(-1) = -0.850918128239322
    IsNull(CscH(0)) = True
    CscH(1) = 0.850918128239322
    CscH(2) = 0.275720564771783
    CscH(10) = 9.07998597121222E-05
    CscH("2.3|-4.5") = "-4.10866737706438E-02|-0.19440184661157"
See also: 
    Cosecant Function
    CosH Function
    CotH Function
    SecH Function
    ACscH Function
    HCosec Function
vX: Number whose hyperbolic cosecant is returned. 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.
Return: The result is expressed in radians.
Note: Microsoft named this function HCosec within their Derived Math Function help topic.

Definition: 

    2 / (Exponent(X) - Exponent(-X))

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