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    Re: Which calculator to use for "arctan(tan(269))"?
    From: Robin Stuart
    Date: 2017 Jul 14, 08:24 -0700

    Tony,

            A few comments:

    • I don’t see it stated that C = Lat2 in great circle distance calculations
    • Does your calculator have its buttons labelled tg() rather than tan()?
    • Lon and Lon1 are essentially redundant.
    • I don’t like redefining LHA as Lon2 –Lon1

    Regards,

    Robin

       
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