On Mon, 19 May 2008, Greg 'groggy' Lehey wrote: > On Sunday, 18 May 2008 at 17:18:30 -0400, Jim Capozzoli wrote: > > I was > > considering figuring out how to do Trig on it and then taking my Trig > > final with it. :)
[snip] > To multiply two numbers, you place the 1 on the C scale (bottom of the > slide) against the first number on the D scale (directly below on the > body). Move the cursor (or your eye :-) to the second number on the C > scale, and read off the result on the D scale. This follows naturally from: ln (xy) = ln x + ln y If you're trying to do trig, presumably the same ideas apply. Since cos x = 1/2 (e^ix + e^-ix) you need to be able to move one half of the slide rule perpendicular to the plane that the other half occupies? Yours in theory, jan -- jan grant, ISYS, University of Bristol. http://www.bris.ac.uk/ Tel +44 (0)117 3317661 http://ioctl.org/jan/ They modified their trousers secretly. _______________________________________________ freebsd-chat@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-chat To unsubscribe, send any mail to "[EMAIL PROTECTED]"