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Tip of the Day
Language: VB4,VB5,VB6,VBS
Expertise: Intermediate
Dec 25, 1999

SinH, CosH, TanH, CotH, SecH, CscH - Hyperbolic trig functions

' hyperbolic sine

Function SinH(value As Double) As Double
    Dim temp As Double
    temp = Exp(value)
    SinH = (temp - 1 / temp) / 2
End Function

' hyperbolic cosine

Function CosH(value As Double) As Double
    Dim temp As Double
    temp = Exp(value)
    CosH = (temp + 1 / temp) / 2
End Function

' hyperbolic tangent

Function TanH(value As Double) As Double
    Dim temp As Double
    temp = Exp(value)
    TanH = (temp - 1 / temp) / (temp + 1 / temp)
End Function

' hyperbolic cotangent

Function CotH(value As Double) As Double
    Dim temp As Double
    temp = Exp(value)
    CotH = (temp + 1 / temp) / (temp - 1 / temp)
End Function

' hyperbolic secant

Function SecH(value As Double) As Double
    Dim temp As Double
    temp = Exp(value)
    SecH = 2 / (temp + 1 / temp)
End Function

' hyperbolic cosecant

Function CscH(value As Double) As Double
    Dim temp As Double
    temp = Exp(value)
    CscH = 2 / (temp - 1 / temp)
End Function

Francesco Balena
 
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