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    Re: Were Short methods really Short?
    From: John D. Howard
    Date: 2016 Aug 3, 09:43 -0700

     David,

    My question has been " How were the Haversign methods better or faster the the straight, Law of Cosine formula.?"

    Look at the beautiful Table of Log sin & cosine and the work sheet that Greg Rudzinski developed.  In the archive on Oct 27, 2015 called Ageton-Classic SR Table PDF.  It does not use Ageton's method of dividing the nav triangle into two right trangles - it only uses Ageton's table.  I think this method is as short and fast as any that Gary named , IMHO

    I think the haversign methods were a holdout from the time sight formuls/methods to get LAT.  I see no advantage of using haversigns or any of the " short methods" over the straight Log sine & cosine Law of Cosine formula.

    John H.

       
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