Date: Mon, 8 Dec 1997 08:42:07 -0500

From: Alex Bogomolny

Hello:

Looked into your derivation and here's a suggestion I can make. From the start, it's hard to solve transcendental equations. Do not use sin(). Instead express Rc^{2} = Rs^{2} - (h - Rs)^{2} from the Pythagorean theorem. You will have roots; but equation solving will be by far more manageable.

Best regards,

Alexander Bogomolny

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