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    Re: An All-Haversine Azimuth (from Lat, Dec and dLon alone)?
    From: Tony Oz
    Date: 2021 Feb 20, 03:16 -0800

    Thanks, Frederick, thanks, David.

    I'm looking for a formula, for an All-Haversine one, which I enter with the Lat, Dec (or LatDest) and dLon to obtain - in one go, no matter how long or complicated, - the initial azimuth.

    Warm regards,
    Tony
    60°N 30°E

    PS
    I was told there is a formula solver/simplifier - the Sage, but I could not mater using it yet...
    As a last resort I plan to express all the haversines as the squared sines of the halved angles, put the HC calculation step - expanded - into the formula for the azimuth instead of every HC instance there.

       
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