I recently found the need to take two coordinates and find the distance between them

The distance between two points is usually given as the "great sphere" distance, which is calculated using spherical trigonometry. The direct distance is seldom used, since crows can't fly underground. A quick google search for "calculate great sphere distance" finds this page, which details the calculation.

In reply to Re: Distance Between Geographical Coordinates by dws
in thread Distance Between Geographical Coordinates by beretboy

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