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    Re: Graphically solving haversine calculation
    From: Jaap vd Heide
    Date: 2015 Nov 14, 03:59 -0800

    Oops. I was close but wrong!

    I should have noticed that for the haversine it matters where in the "unit circle" the gap between 90° and (dec + lat) lies.

    As in: the sum of LHA and azimuth is close (in the case shown) to 180°, but most certainly doesn't equal 180°.

       
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