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As Vic Fraenckel has noted, Vincenty's formula, direct method, will provide
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 course
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
> To:     NAVIGATION-L@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@EMC.COM

   

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