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    Re: Formula for dis. between two points on the Globe
    From: Pierre H Boucher
    Date: 1996 Oct 21, 15:21 EDT

    <Ben Smith wrote :
    >Is there somebody that hase the Formula to calculate the distans
    >between two points on the globe.
    >eg. 52 29.66N  and 52 32.86N
    >     005 02.45E     004 40.67E
    >My GPS tells me that it is 13.6nm        CTS106
    To compute the distance the formula is:
    Distance = arcCOS (( sinL2  x  sinL1 ) + ( cosL2 x cosL1 x cosDLo ))
    To compute the course:
    Course in quadrant = arcCos (( sinL2 - ( cosD x sinL1 )) / ( sinD x cosL1 )
    L1 and L2 = Latitudes
    DLo = Difference of longitude
    D = distance as compute by the first formula
    Important note:
    convert all datas as dd.dddd  Ex: 52d 29.66' = 52.4944d
    If L1 and L2 are of contrary names enter L2 as negative.
    Hope this help,
    Pierre Boucher N
    CPS code 16-32

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