Talk:Mock AIME 1 2007-2008 Problems/Problem 14: Difference between revisions
Created page with '== Solution is wrong == This solution is wrong. Let AB=x. Use power of a point to show that: (1/18)/(1/18+2r)=(x)/(2x)=1/2 1/18=1/36+r r=1/36. The current solution makes i…' |
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Let AB=x. Use power of a point to show that: | Let AB=x. Use [[power of a point]] to show that: | ||
(1/18)/(1/18+2r)=(x)/(2x)=1/2 | (1/18)/(1/18+2r)=(x)/(2x)=1/2 | ||
Latest revision as of 16:44, 20 November 2009
Solution is wrong
This solution is wrong.
Let AB=x. Use power of a point to show that:
(1/18)/(1/18+2r)=(x)/(2x)=1/2
1/18=1/36+r
r=1/36.
The current solution makes its mistake when it uses law of cosines for the second time.
--Goos 21:41, 20 November 2009 (UTC)Goos
