[thelist] Longitude conversion

Richard Bennett richard.bennett at skynet.be
Fri Dec 7 14:14:29 CST 2001


Thanks a lot for that resource Mike - looks like what I was looking for!
Thanks Spinhead too.

----- Original Message -----
From: "Mike Migurski" <mike at saturn5.com>

> 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.






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