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    Re: Spherical triangle split by right triangles
    From: Bob Goethe
    Date: 2016 Jan 22, 11:44 -0800

    There are many ways to manage sight reduction...and even many which split the navigational triangle into two right triangles.  The one I (think I) understand best is Ageton's method, the equations of which I got from Volume 2 of Bowditch, 1975.

    The illustration shows you where Q is graphically.  Equation 2 on the worksheet derives that number mathematically.

    The distance from point Q to the apex of the triangle is R, which is derived in equation 1.

    Bob



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