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    Re: Haversines with Logarithms
    From: Matthew Gianelloni
    Date: 2020 Oct 13, 11:22 -0700

    All:

    Just remembered that part of the impetus for this whole thing was the realization that the entire spherical triangle formula could be solved using only haversines. (No sines or cosines)

    There are 4 variables in the equation: Latitude, Declination, Meridian Angle, and Altitude (Hc).

    Input 3, get the 4th.

    So I set about making algorithms that made it a lazy man's job.

    I'll post them as formulas here soon. The 3 previous algorithms posted are a step by step implementation of that. The Meridian Angle algorithm is tested and works in all cases I could forsee. No warranty on the others.

    Matt

       
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