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A Csc Function
Math Trig Complex Class

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

"Inverse Cosecant" or "Arccosecant"
Angle whose cosecant is X.
Inverse of the Cosecant function.

Examples: 
    ACsc(-0.5) = "-1.5707963267949|1.31695789692482"
    IsNull(ACsc(0)) = True
    ACsc(0.5) = "1.5707963267949|-1.31695789692482"
    ACsc(1) = 1.5707963267949
    ACsc(1.5) = 0.729727656226967
    ACsc(2) = 0.523598775598299
    ACsc(3) = 0.339836909454122
    ACsc(10) = 0.10016742116156
    ACsc("2.3|-4.5") = "8.87947507887921E-02|0.175981348644681"
See also: 
    Cosecant Function
    ACos Function
    ACot Function
    ASec Function
    ACscH Function
    Arccosec Function
vX: Function returns the principal value of the angle whose cosecant (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 Arccosec within their Derived Math Function help topic.

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