[Elecraft] OT: math question

[S55M]

Yes math is beautifull (callculating needed space for 3d antennas HI.
But google can spare some time and paper.

:)
http://home.att.net/~numericana/answer/algebra.htm#quartic


----- Original Message ----- 
From: "Dan Barker" <dbarker at visioncomm.net>
To: <Able2fly at aol.com>; "Elecraft" <elecraft at mailman.qth.net>
Sent: Wednesday, March 30, 2005 10:22 PM
Subject: RE: [Elecraft] OT: math question


> I ran into a brain-teaser once, that had me baffled for hours (I won't say
> how many). Finally, I called my sister, the Rocket Scientist ("actually,
> we're not _Rocket_ scientists" - That's a quote from her husband) and
asked
> her.
>
> She and Paul spent a few minutes on the problem, figured it out, but it
was
> such a trivial answer they threw it away. Since I'd spent so long on the
> Question, I gave her about a week and then I called back. Luckily they'd
not
> taken out the trash, so she easily found their notes and read them to me.
>
> I won't spoil it for you 'crafters.
>
> Dan / WG4S / K2 #2456
>
> Problem: An alley has a 20-foot ladder across it, in the left lower corner
> and leaning on the right wall. There also is a 30-foot ladder, from the
> right lower corner leaning on the left wall. The laders cross at 10 feet
> high.
>
> How wide is the alley?
>
> Usual conventions: alley is all right angles, ladders have no thickness
nor
> bends, blah blah blah...
>
> This should make some juices flow out there. Just simple geometry, or is
it?
>
>
> PS: Iteration is cheating. Sorry Issac.
>
>
> <snip>
>  the responses would be far more interesting than merely "looking up" the
> answer
> </snip>
>
> _______________________________________________
> Elecraft mailing list
> Post to: Elecraft at mailman.qth.net
> You must be a subscriber to post to the list.
> Subscriber Info (Addr. Change, sub, unsub etc.):
>  http://mailman.qth.net/mailman/listinfo/elecraft
>
> Help: http://mailman.qth.net/subscribers.htm
> Elecraft web page: http://www.elecraft.com