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Subject: Re: Spherical Law of Cosines
From: Dan Allen (danallen46@XXX.XXX)
Date: Sun Oct 27 2002 - 11:23:06 EST
On Saturday, October 26, 2002, at 07:10 AM, Trevor J. Kenchington wrote:
> I think it is true that sin(90-a)=cos(a), making this form
> ofthe alternate identical to the canonical version. Of course, provided
> one is careful over using (e.g.) latitudes rather than co-latitudes
> with
> the alternate, you could forget about explicitly subtracting anything
> from 90. But remembering the alternate version as a solution to the
> spherical triangle could get you into serious confusion.
Good clarifications. I agree.
I just remember the canonical version and go from there.
Dan
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