Re: TIB: American High School Math Exam thingy...

To: ti-basic@lists.ticalc.org
Subject: Re: TIB: American High School Math Exam thingy...
From: CmdrERT01@aol.com
Date: Wed, 16 Feb 2000 19:17:28 EST
Reply-To: ti-basic@lists.ticalc.org


I don't remember the number, but I can describe the question.  Btw, this was 
on the AMC 12, in case anyone's confused.  You had a circle with center O. OB 
is a radius of the circle that has a length of 1.  You've got a line AB 
tangent to the circle at B, and a line AO.  The lengths of AB and OA are 
unknown.  Then you draw a line OC so that it is the angle bisector of angle 
OAB, where C is a point on radius OB.  Got it so far?  You're supposed to 
find out the length of OC.  It seems like it should be 1/2, but it turns out 
that its 1/(1+sin /theta/), where theta is angle BOA.

Eric Tollefson
Cmdr ERT01@aol.com

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