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A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
Re: Martelli's Time-Sight Tables
From: John Brown
Date: 2012 Dec 24, 01:25 -0800
From: John Brown
Date: 2012 Dec 24, 01:25 -0800
Hewitt wrote:
Since havt = (1– cost )......
1-cos t = versine t (versines are used in place of haversines in Burton's 4-figure tables - it makes no difference to the results, when substituted in the cosine haversine formula)
hav t(or half versine t) = (1-cos t)/2
John
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