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    Re: POL and arctan2
    From: Bill B
    Date: 2005 Nov 10, 20:15 -0500

    >> In the polar-rectangular conversion formula, we know that, by definition, R
    >> squared = x squared + y squared.and that...
    
    George:
    
    Put simply.
    
    All R-P  knows how to do (when properly signed) is connect the dots.  Give
    it an x and y value relative to 0,0, and it reports a distance and angle
    from 0,0.  It does not know you messed with it's little routine when you
    determined the values for x and y.
    
    Let GCD = Great circle distance
    
    Instead of the first value being the distance it is the sine of an angle
    determined by: Chord of GCD x 360) / 21600
    which nominally equals Chord GCD/60 in our case
    
    What we would minimally hope for is the sine of GCD/60.
    
    Yes?
    
    Bill
    
    
    

       
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