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    Re: mid-longitude sailing
    From: George Huxtable
    Date: 2007 Jan 6, 23:41 -0000

    Sorry. In that last message, my mouse slipped, in writing-
    
    "Consider a great-circle journey, from (lat1, long1) to (lat2, long2).
    What's the latitude, at the mid-longitude point, where the long is
    (long2 - long1)?"
    
    That ought to have read-
    
    Consider a great-circle journey, from (lat1, long1) to (lat2, long2).
    What's the latitude, at the mid-longitude point, where the long is
    (long2 + long1) / 2?
    
    Sorry about that
    George.
    contact George Huxtable at george---.u-net.com
    or at +44 1865 820222 (from UK, 01865 820222)
    or at 1 Sandy Lane, Southmoor, Abingdon, Oxon OX13 5HX, UK.
    
    
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