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Old 07-12-2003, 01:12 PM   #8 (permalink)
charliex
Junkie
 
Location: North Hollywood
Code:
diff_miles = 3963.0 * acos( sin( zip1_lattitude_rad ) * sin ( zip2_lattitude_rad ) + cos( zip1_lattitude_rad ) * cos ( zip2_lattitude_rad ) * cos( zip2_longitude_rad - zip1.longitude_rad ) )
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