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December 20, 2014

December 20, 2014

Posted by **starlight18** on Sunday, March 11, 2012 at 10:38am.

- trig or geom -
**Steve**, Sunday, March 11, 2012 at 1:24pmUsing the topmost angle, the cosine is

adjacent/hypotenuse

so .4 = b/11, making b=4.4

Now, with c=11,b=4.4, that means that

a^2 = 11^2 - 4.4^2 = 101.64, so

a = 10.1

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