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    Sight Reduction Formula Question
    From: FS
    Date: 2005 Jan 7, 07:24 -0800

    In _Celestial for the Cruising Navigator_ by Merle
    Turner, the navigational triangle azimuth formula is
    given as:
    
    cos Z = (sin d - (sin L * sin H ))/(cos L * cos H)
    
    but Dutton's Navigation and Piloting gives the much
    simpler:
    
    sin Z = ( cos d * sin t ) / cos H
    
    They both seem to work.  But there must be some reason
     that the longer one is better, right? Works in more
    cases?  My goal is simplicity, using a basic
    scientific calculator.
    
    Thank you in advance for any help, Great Wizards.  The
    space navigation stuff is fascinating, albeit "over my
    head"!
    
    
    
    
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