A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
From: Örjan Sandström
Date: 2019 Apr 15, 06:52 -0700
Anyone know what formula is used in "Reeds Astro Navigation Tables"? Versines and ABC for azimuth* is all I have found out by web search.
But versines are used in several formulas, and usually with sines or cosines...
versines can be "forced" into in most formulas with a bit of math, not much help in other words.
*I prefer the quick diagram by Hanno Ix