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June 25th, 2009, 02:18 PM   #1
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find longitude, latitude using haversine

hello
haversine is used to caclulate distance between two lons, lats
haversine (d/R) = haversine(?1 ?2) + cos(?1)cos(?2)haversine(??)

where haversin is the haversine function, haversin(?) = sin2(?/2)
d is the distance between the two points
R is the radius of earth
?1 is the latitude (in radians) of point 1,
?2 is the latitude (in radians) of point 2, and
?? is the longitude difference (in radians),

what i want is to find lon, lat of point 2 given distance (d), and lon lat of point 1

your help is much appreciated
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