Cub Driver ) wrote:
:
: Does anyone know the exact conversion in feet for a minute of latitude and
: longitude?
:
: But I am scratching my head over the longitude! Doesn't a minute of
: longitude depend on your location between the pole and the equator?

You plug the latitude into the cosine function and that gives you
a factor to tell you how short the longitide is.

cos(0)=1 cos(90)=0 cos(60)=.5

So if one minute (1/60th of a degree) is one nmi at the equator,
then at poles its 1*cos(90)=0 or at 60 degrees north (or south)
its 1*cos(60)=.5

Google claims 1 nautical mile = 6 076.11549 feet so
at 60 degrees it should be about 3038 feet.

-tim
http://web.abnormal.com