Hi OA
This is what I use. Sorry about the brackets!
Initial True Track = arcos [ (sin LatB - sin LatA* cos(Dist/60))/(sin (Dist/60) cos LatA)]
if sin (LongA - LongB) < 0
then (360-Initial True Track)
is used
Where:
Start Position
Lat A
Long A
Finish Position
Lat B
Long B
Last edited by Mornington Crescent; 8th Oct 2006 at 09:36.
Reason: Update