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December 19, 2014

December 19, 2014

Posted by **Anonymous** on Friday, March 23, 2012 at 12:40pm.

- precal -
**bobpursley**, Friday, March 23, 2012 at 12:44pmsin*csc=1

sin*(sin= sin^2x

1-sin^2x=cos^2 x

cos^2x=cos^2x

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