A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
From: Rafael C. Caruso
Date: 2021 Jan 17, 09:35 -0800
Many thanks for sending me the derivation - this was exactly what I was looking for. I had assumed it involved dividing an expression for sin Z by an expresssion for cos Z, but had not made much headway. Once again, a derivation always seems straightforward when you see it done by someone who knows what he is doing!