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    Figuring Course given Lat/Long of destination
    From: Ed Kitchin
    Date: 2000 Feb 27, 3:50 PM

    An interesting problem appears in the latest issue of  "Ocean Navigator" Which 
    asks that you figure the course to a destination given origination and 
    destination. It would seem easy to determine the difference in lat. (The 
    destination was over several degrees of lat.), but deg. of long. differ in 
    length as you change lat. One could simply take the mean of the two given 
    long. and use that, but that bothers me as not being all that accurate. There 
    is the error of the Macerator thing. You could use universal plotting sheets 
    and construct using a vertical representing diff./lat., then draw a 
    horizontal from the top of the lat. fig., representing the long. at the 
    destination, and draw a hypotenuse as the course line. (???) Are there any 
    mathematicians out there to
     give me a good formula to learn for this task? Thank you.
    Ed Kitchin

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