Difference between revisions of "Power of a Point Theorem/Introductory Problem 1"
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Revision as of 23:13, 30 June 2006
Problem
Find the value of 
in the following diagram:
Solution
Applying the Power of a Point Theorem gives us 
. Expanding and simplifying we get 
. This factors as 
We discard the negative solution since distance must be positive. Thus 
.
Back to the Power of a Point Theorem.
