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    theboo10's Avatar
    theboo10 Posts: 1, Reputation: 1
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    #1

    Feb 27, 2009, 12:35 PM
    Equation for Inverse Cotangent
    How do you enter inverse cotangent (cot^-1) into an excel equation? I tried using ACOT but it did not work.
    JBeaucaire's Avatar
    JBeaucaire Posts: 5,426, Reputation: 997
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    #2

    Feb 27, 2009, 05:54 PM

    This function is not built in, probably because it can be easily figured with already existing function ATAN.

    If the value you want the inverse cotangent is in cell A1, then the formula would be:

    =ATAN(1/A1)
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