**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. Copyright 1996-1999 Entisoft

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