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    Re: Haversine- how to derive it?
    From: John Brown
    Date: 2015 May 17, 15:46 -0700

    Hanno

    Your list of virtues of the haversine are IDENTICAL to those of the versine, so why do we need to divide by 2?

    For example the formula: vers ZD = vers LHA. cos lat. cos dec + vers (lat +/~ dec) works just as well as the traditional formula, substituting versines for the haversines and using both natural and log functions.

    Could a mathematician or a navigation historian on this list please explain why the versine is the poor relation of its half-size parent??

    Regards

    John

       
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