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January 25, 2015

January 25, 2015

Posted by **Maria** on Friday, December 30, 2011 at 10:59pm.

- Precalculus -
**Steve**, Saturday, December 31, 2011 at 12:26amI think you have a typo. As written, the equation does not hold. Try using x=pi/4. Check to see whether you need exponents on the secx terms.

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