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February 28, 2015

February 28, 2015

Posted by **Mik** on Friday, September 30, 2011 at 12:58am.

- Geometry -
**Reiny**, Friday, September 30, 2011 at 7:59amthe larger angle Ø must be across from the larger side, so by the cosine law....

16^2 = 10^2+13^2 - 2(10)(13)cosØ

260cosØ = 13

cosØ = 13/260 = 1/20 = .05

Ø = 87.1°

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