No idea how to get this one out, i know it is probably simple, just can't see it...grrr

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- Jan 20th 2006, 05:07 PMjacsCircle proof
No idea how to get this one out, i know it is probably simple, just can't see it...grrr

- Jan 21st 2006, 06:54 AMCaptainBlackQuote:

Originally Posted by**jacs**

problem. $\displaystyle \angle CGF$ is right, and $\displaystyle \angle CAF$ cannot be right as $\displaystyle AF$

is a cord and not a tangent to the circle with centre $\displaystyle O$. But opposite

angles in a cyclic quad add to 2 right angles!

RonL - Jan 21st 2006, 04:00 PMjacs
Looks like the question has been structured incorrectly then, since it is a scan straight from the actual paper. I will go in and smack my teacher (lol....only joking, will point it out very politely and then glare since i spent so much time trying to work it out....grrrr)

thanks for your help

jacs - Jan 22nd 2006, 07:33 AMCaptainBlackQuote:

Originally Posted by**jacs**

We can all make mistakes, and so benefit from others checking our work.

RonL - Jan 22nd 2006, 01:56 PMThePerfectHackerQuote:

Originally Posted by**CaptainBlack**

- Jan 22nd 2006, 02:31 PMjacsQuote:

Originally Posted by**ThePerfectHacker**

lol..... heee heee

yes i went over it a number of times and your reasoning looks good to me. I have treid to prove that question over and over and jsut coudltn get it to work, least i know why now

thanks