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March 6, 2015

March 6, 2015

Posted by **Amy** on Monday, December 21, 2009 at 11:57pm.

sec^2+csc^2=sec^2+csc^2

- Pre Cal -
**drwls**, Tuesday, December 22, 2009 at 4:22amThere is nothing to prove. You have exactly the same terms on both sides already.

I'd call that a tautology, not an identity

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