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September 17, 2014

September 17, 2014

Posted by **Liz** on Friday, November 8, 2013 at 8:18pm.

- pre-calc -
**Damon**, Friday, November 8, 2013 at 8:30pmtry x = y = 45 degrees

cos (45 - 45) = cos 45 - cos 45

cos 0 = 1/sqrt2 - 1/sqrt 2

1 = 0 no way :)

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