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I checked it out, JD. for me, this is like reading Chinese---no understanding at all. Thank God I have good ears, good hand-eye coordination, and a dogged will to make pianos beautiful. If my job depended on understanding math formulae, I'd be cooked like a goose.<div>DA</div><div><br></div><div><br><div><div>On Oct 1, 2008, at 1:38 PM, John Delacour wrote:</div><br class="Apple-interchange-newline"><blockquote type="cite"><span class="Apple-style-span" style="border-collapse: separate; color: rgb(0, 0, 0); font-family: Helvetica; font-size: 16px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; orphans: 2; text-align: auto; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-border-horizontal-spacing: 0px; -webkit-border-vertical-spacing: 0px; -webkit-text-decorations-in-effect: none; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0; "><div>At 17:17 -0700 30/9/08, David Andersen wrote:</div><div><br></div><blockquote type="cite" cite="" style="padding-top: 0px; padding-bottom: 0px; ">...I'll read the article and probably still be in the dark if there's any more than 6th grade algebra involved.</blockquote><div><br></div><div>I'd guess it might be a good idea to look at the<span class="Apple-converted-space"> </span><a href="http://en.wikipedia.org/wiki/Law_of_cosines">Law of Cosines</a><span class="Apple-converted-space"> </span>in preparation.</div><div><br></div><div>JD</div><div><br></div></span><br class="Apple-interchange-newline"></blockquote></div><br></div></body></html>