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    Re: Radar Plotting Sheet for Polaris
    From: John Karl
    Date: 2009 Oct 21, 09:36 -0700

    
    This looks like a graphical solution to the simple trig equation Lat =
    Ho - cdec x cos(LHAp), shown on page 68 of my book, and explained
    further in problem 2.16, page 179.  Some navigators might find
    punching a few keys on a calculator easier than working with a plot.
    
    JK
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