# NavList:

## A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding

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Re: No solution yet
From: Fred Stevens
Date: 2011 Dec 27, 12:57 -0800

Robert:

OK, I give up. I looked at your figures and I do not get the same results.
Here are mine:

sin -16.735 = -.28795
sin 10.408 = .18066
cos -16.735 = -.95765
cos 10.408 = .98355
cos 72.7033 = .29732

Plugging those values into the formula I get cos d =-.33207, not .2280

Your end result is correct, mine is way off, so I can only assume that
your figures are correct. Any idea why both my calcs are so wrong? Maybe
it is the order of arithmetic precedence that I am using. Here is mine:
cos d = (-.28795*.18066)+(-.95765*.98355*.29732) = -.33207

-.28795*.18066+(-.95765)*.98355*.29732 gives the same result

Fred
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