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I think Middy's way of thinking about it was right. It's just like 2 of the 1st example on the linked page back-to-back. And it's actually fairly easy to work out when you think about it that way. No calculus required, just the tan button on the calculator. I'm not sure it actually improves the error at all. Oh well ...
Last edited by eqcradle; 11-07-2007 at 06:17 PM.
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