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    Re: The Great Circle Challenge
    From: Samuel L
    Date: 2014 Dec 26, 12:25 -0800

    'Hope this is right;

     

    Distance= 4,069 nm

    Method-

    90-sin-1((sin(21d 57min) x sin(-41.5d) + cos(21d 57min) x cos(-41.5d) x cos(334d 10min))

    Multiply the answer by 60

     

    Initial Bearing- 154d

    Method-

    180 + tan-1(sin(334d 10min) / (cos(334d 10min) x sin(41.5d) - cos(41.5d) x tan(-21d 57min))

     

    Sam L.

       
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