A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
From: David C
Date: 2018 Dec 15, 20:10 -0800
I think that I have bitten of more than I can chew. I decided to calculate t using Norie 1970
The first part is to evaluate sin(lat) * sin(dec)
From Norie log (sin (41)) = 9.81694 (bar 1.81694)
Regardless of which notation is used the mantissa stays the same.
If I enter log (sin (41)) into my fx-82AU the answer is -0.18306. Not only is the answer negative but the mantissa differs from that in Norie.
What am I doing wrong?