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*From*: David Bowman <David_Bowman@GEORGETOWNCOLLEGE.EDU>*Date*: Wed, 18 Aug 2004 23:23:26 -0400

Now that the previous spherical problems have been mostly put to rest

let me propose another related problem.

Painted on the concrete floor of each of the cells in the Gitmo

detention complex is an arrow. Question: What direction does this

arrow point?

Hint: The Naval base at Guantanamo has latitude 20.1 deg N and

longitude 75.1 deg W, and the Kab'bah in Mecca has latitude

21.45 deg N and longitude 39.75 deg E. (The latitude difference

between these 2 points is less than 1 1/2 degrees.)

As part of your answer find a formula for the heading angle of the

geodesic connecting 2 arbitrary fixed points (of known latitude

and longitude) on the earth's surface as measured by an observer at

one of those points.

David Bowman

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