[thelist] Longitude conversion
Mike Migurski
mike at saturn5.com
Fri Dec 7 11:38:05 CST 2001
hi,
short answer:
The distance covered by one minute of long. is proportional to that
covered by one minute of lat. by the cosine of the angle from the equator.
Angle from the the equator is given directly by long., so:
cos( long. ) * 6080ft
long answer:
http://www.mathforum.com/dr.math/problems/longandlat.html
-mike.
>Hi,
>Can anyone help with this,
>I want to translate the difference between two Lon/Lat coords into feet.
>
>I understand that 1 minute latitude is 6080 feet.
>And that 1 minute Longitude will be less than this, depending on how far
>from the pole it is.
>
>Does anyone know the formula to determine this?
>
>Thanks,
>Richard.
>
>
>
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