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1. The problem statement, all variables and given/known data

In the figure,TN=NK, ST=12 and SN=[tex]\sqrt{69}[/tex].Find the lenght of TK.

[PLAIN]http://img695.imageshack.us/img695/633/50042657.png [Broken]

2. Relevant equations

Pythagorean Theorem

3. The attempt at a solution

Segment SN is the median of the right triangle.Here its not given the other leg how can we find a or b ????

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# Homework Help: Right triangle problem,please check

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