Re: spherical geometry

["Carl E. Mungan" <mungan@USNA.EDU>]

David Bowman wrote:

> 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.)

Using methods similar to my PDF, I find the arrow points 29.5 degrees
north of east.

I'll post my formula if you confirm this answer first (cc me directly
to avoid a one-day delay for the digest to come out). Carl
--
Carl E. Mungan, Asst. Prof. of Physics  410-293-6680 (O) -3729 (F)
      U.S. Naval Academy, Stop 9C, Annapolis, MD 21402-5040
mailto:mungan@usna.edu       http://usna.edu/Users/physics/mungan/