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From: Peter Bennett (no email)
Date: Mon Nov 01 2004 - 21:00:23 EST
Monday, November 1, 2004, 8:23:42 AM, Jim wrote:
JA> Assuming spherical earth, we all know that 1 minute of latitude is equal to
JA> 1 nautical mile.
JA> At what latitude is 1 minute of LONGITUDE:
JA> (easy one) equal to 1 nautical mile
at the equator
JA> (hard one) equal to 1 STATUTE mile
The length of a minute of longitude at any latitude is equal to the cosine of the latitude.
5280/6076 = 0.87 The angle whose cosine is 0.87 is 29.6.
-- Peter Bennett, VE7CEI Vancouver, B.C., Canada Lien Hwa 28 (AKA Polaris 30) "Sea Spray" GPS and NMEA info: http://vancouver-webpages.com/peter Vancouver Power Squadron: http://vancouver.powersquadron.ca _______________________________________________ http://lists.samurai.com/mailman/listinfo/trawlers-and-trawlering To Unsubscribe send email to Include the word Unsubscribe (and nothing else) in the subject or body of the message.
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