Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP Posting-Version: version B 2.10.1 6/24/83; site watmath.UUCP Path: utzoo!watmath!ljdickey From: ljdickey@watmath.UUCP (Lee Dickey) Newsgroups: net.math Subject: Re: math identity Message-ID: <8603@watmath.UUCP> Date: Fri, 10-Aug-84 10:40:59 EDT Article-I.D.: watmath.8603 Posted: Fri Aug 10 10:40:59 1984 Date-Received: Sat, 11-Aug-84 00:15:16 EDT References: <261@tymix.UUCP> <266@tymix.UUCP>, <8601@watmath.UUCP> Organization: U of Waterloo, Ontario Lines: 10 > The following assertion was found in the curiosity column of a magazine > addressed to mathematics instructors: > > tan(3*pi/11) + 4*sin(2*pi/11) = sqrt(11) exactly, but who > cares? > > Is the relation exact, or is it one of those extraordinary coincidences? The relation is exact, and not too dificult to prove. If you want the proof, write to me.