A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
From: Brad Morris
Date: 2018 Dec 21, 18:16 -0500
Dear Lars, Seasons Greetings!
May I ask you if you are familiar with the Geogebra tool?
I am creating explanations and illustrations for Haversine table - I want to include the properly drawn PZX triangle. The PX and PZ sides are easy to draw - they are just ellipses. I'm stuck with the ZX side - have no idea on how to draw a great circle not passing through poles of a sphere...
Here is where I got so far.
I want to use the same sketch for all possible (same-name, contrary-name) allocations by moving Z and X around - with minimum editing where absolutely required.
Could you please give a mathematical advise here?
Thank you in advance.
Tony 60°N 30°EFile: