Vector math for dummies.

Post #42,917 by inthane-chan 6/19/02 5:19:19 PM Reply	Vector math for dummies. Assuming I've got a velocity and a heading value, I need to derive dX,dY,and dZ values. My geometry is pretty horrible - I haven't touched it in about 8 years - and Google keeps bringing up stuff going the other way. Yeah, I know that I could figure it out if I figured out COS, TAN, and SINE, but I want to UNDERSTAND, not just throw a formula at it. Anybody got some good geometry math sites? InThane - Now running Ashton rev 2.0
Post #42,949 by a6l6e6x 6/19/02 9:50:42 PM 6/19/02 9:57:43 PM Reply	Not answering your request, but... technically velocity includes both speed and direction. [link\|http://physics.webplasma.com/physicstoc.html\|Here] is one reference. Alex "Men occasionally stumble over the truth, but most of them pick themselves up and hurry off as if nothing had happened." -- Winston Churchill (1874-1965) Edited by a6l6e6x June 19, 2002, 09:57:43 PM EDT Expand All History
Post #42,952 by inthane-chan 6/19/02 9:58:47 PM Reply	Okay, then... Got that backwards. I meant SPEED, not VELOCITY. Ooops. :) InThane - Now running Ashton rev 2.0
Post #42,977 by morganek 6/20/02 1:24:52 AM Reply	Tip This is not geometry. This is trigonometry. Here's something google brought-up: [link\|http://aleph0.clarku.edu/~djoyce/java/trig/\|Dave's short course in trigonometry] I think you may be missing the point of trig functions--they are more than just formulas you "throw" at the problem. They also form the notation used to express the relationships between angles and sides in right triangles. HTH
Post #42,978 by inthane-chan 6/20/02 2:04:22 AM Reply	Yer right, of course... ...that's the problem with this stuff - it's Way Back There in The Olde Memory Machine - which is none too functional inside THIS head. Helps to know the terms you're looking for BEFORE you go hunting for the stuff. InThane - Now running Ashton rev 2.0

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