From: <HIDDEN>
Newsgroups: comp.soft-sys.matlab
Subject: Re: Coordinate on sphere(vector calculus)
Date: Thu, 25 Mar 2010 18:49:04 +0000 (UTC)
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What I meant was that the angle between "P1-P2" and "Center-P2" should be 90 degrees. So, indeed, at the vertex P2.