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Calculating distance...
Posted:
Jan 14, 1993 2:25 PM


Given the circumference and diameter of a planet (in this case say earth) in miles (or kilometers) what formula could be used to calculate the distance between two known geographic coordinates? Assume the planet is a perfect sphere and that points are given to the minute. An example: Given the diameter of planet x, 12500 miles, what is the distance bewteen the points 42 deg 60 min N by 78 deg 40 min W and 38 deg 60 min by 65 deg 20 min. Assume planet x is a shere and an arbitrary equator and meridian are drawn.
Anybody have any ideas? Thanks, Peter  



