**Public Function SinH( _
ByVal vX As Variant _
) As Variant**

**"Hyperbolic Sine" **

Hyperbolic sine of a real or complex number.

Inverse of the ASinH function.

**Examples:** SinH(-1) = -1.1752011936438
SinH(-0.5) = -0.521095305493747
SinH(0) = 0
SinH(0.5) = 0.521095305493747
SinH(1) = 1.1752011936438
SinH(10) = 11013.2328747034
SinH("2.3|-4.5") = "-1.04069081055929|4.92403489398475"

**See also:** Sine Function
CosH Function
TanH Function
ASinH Function
HSin Function

**vX:** Number whose hyperbolic sine 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 HSin within their Derived Math Function help topic. **Definition:**

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

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