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April 20, 2014

April 20, 2014

Posted by **Cynthia** on Friday, August 3, 2012 at 3:24pm.

Please explain.

- Trigonometry -
**Steve**, Friday, August 3, 2012 at 3:45pmtan*sin + cos

sin^2/cos + cos^2/cos

(sin^2+cos^2)/cos

1/cos

sec

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