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Re: Solution to a problem!!

-----Original Message-----
From: Ken Caviness <caviness@southern.edu>
To: phys-l@atlantis.uwf.edu <phys-l@atlantis.uwf.edu>
Date: Wednesday, October 28, 1998 2:48 AM
Subject: Re: Solution to a problem!!


. . .
I found it easier to solve for D than x, but was still unable to get it
in
closed form, but only as the solution of the equation

(-7/3) sec(D) == cot(D) + tan(D)
. . .


Ken,
This equation is reducible to sin(D) = - 3/7.
Reduce everything to sines and cosines - multiply through by cosine -
then eliminate cosines with cos^2 = 1 -sin^2. It falls apart!

PS: You might worry about just what a negative value of D means in your
model.

-Bob

Bob Sciamanda
Physics, Edinboro Univ of PA (ret)
trebor@velocity.net
http://www.velocity.net/~trebor