27 Mar
2011
27 Mar
'11
1:27 p.m.
From: Dan Asimov <dasimov@earthlink.net> To: math-fun <math-fun@mailman.xmission.com> Sent: Sun, March 27, 2011 12:20:32 AM Subject: Re: [math-fun] perpendicular planes If two lines are given parametrically by {u0 + su} and {v0 + tv} for (s,t) in R^2, vectors u0, v0, and unit vectors u, v, then the distance between the lines is just (setting w0 = u0-v0) |w0 * u x v|, or am I missing something? --Dan ________________________________________________________________________________________ Let's divide that expression by |u x v|. -- Gene