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    Re: query
    From: Mitch B Burrill
    Date: 2002 Aug 21, 14:54 -0400

    Thanks Michael,
    It would be constant TC. Sorry, but I only discovered what a rhumb course was a few hours ago.
    I am rapidly becoming obsessed with navigation !
    
    Mitch
    
    Mitch Burrill
    mburrill{at}leesburgva.org
    
     -----Original Message-----
    From:   Michael Wescott [mailto:wescott_mike{at}EMC.COM]
    Sent:   Wednesday, August 21, 2002 2:43 PM
    To:     NAVIGATION-L{at}LISTSERV.WEBKAHUNA.COM
    Subject:             Re: query
    
    Mitch B Burrill writes:
    > If I am at lat1, long1,  and go XXX nm at TC YYY, What is the exact
    > formula from spherical trigonometry to get lat2, long2 ?
    
    I would argue that the problem is not sufficiently well specified.
    
    Is TC=YYY merely the initial course for a Great Circle trip during
    which the course will generally vary as the trip progresses. Or is TC
    to remain constant for the whole trip, i.e. a rhumb line course? Or
    something else altogether?
    
    --
            Mike Wescott
            Wescott_Mike{at}EMC.COM
    
    
    

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