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March 4, 2015

March 4, 2015

Posted by **Ae** on Sunday, June 29, 2014 at 1:42am.

- Trigonometry -
**Steve**, Sunday, June 29, 2014 at 1:03pmthe angle is x, where cos x = 15/20

the area is 15√(20^2-15^2)

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