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    Re: query
    From: Glendon
    Date: 2002 Aug 22, 09:06 +1000

    Oh, I forgot, that site also has Vincenty's method in downloadable  Excel
    Spreadsheet form...see, http://www.auslig.gov.au/geodesy/datums/calcs.htm
    while I haven't looked, the formulae must be embedded in the spreadsheet
    As other posters have noted, Vincenty's method is a bit of overkill in terms
    of accuracy required for navigational problems
    Lee Martin
    ----- Original Message -----
    From: "Glendon" 
    Sent: Thursday, August 22, 2002 8:43 AM
    Subject: Re: query
    > As Vic Fraenckel has noted, Vincenty's formula, direct method, will
    > an ellipsoidal solution to your problem. For an online application of
    > Vincent's formula and reference to his original article, go to
    > http://www.auslig.gov.au/geodesy/datums/vincenty_direct.htm
    > ----- Original Message -----
    > From: "Mitch B Burrill" 
    > To: 
    > Sent: Thursday, August 22, 2002 4:54 AM
    > Subject: Re: query
    > > Thanks Michael,
    > > It would be constant TC. Sorry, but I only discovered what a rhumb
    > was a few hours ago.
    > > I am rapidly becoming obsessed with navigation !
    > >
    > > Mitch
    > >
    > > Mitch Burrill
    > > mburrill@leesburgva.org
    > >
    > >  -----Original Message-----
    > > From:   Michael Wescott [mailto:wescott_mike@EMC.COM]
    > > Sent:   Wednesday, August 21, 2002 2:43 PM
    > > 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@EMC.COM

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