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> On 3/22/07, Bill  wrote:
>> Oh. I wondered how you got GHA, LHA or declination when only one leg and one
>> angle are given, and no time.  Must be a way, but it is above my head.
>>
>> Which leaves me with a pocket calculator, watch, sextant and almanac and the
>> knowledge an HC and azimuth, and my best guess of 90/270d, is better than a
>> time sight.
>
> Sorry, Bill.
>
> The inputs I use are the body (including limb in case of sun) and
> time, after previously entering the DR and date and time, etc.
>
> There would be some re-arrangement of one or more of the nav formulas
> that would give the azimuth as a result of the equivalents of the same
> data but I don't know it. Perhaps one of the more mathematically
> focused could derive it. Let us know if you find out.

That's where this hog runs out of acorns. *IF* my understanding is correct,
one requires three inputs to solve for an unknown in the oblique spherical
triangle, so it may require breaking it up into right triangles.

Thanks

Bill


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