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April 18, 2014

April 18, 2014

Posted by **kc** on Sunday, July 24, 2011 at 8:49pm.

- pre cal 2 -
**Angela**, Sunday, July 24, 2011 at 8:58pmtanx(cotx/cosx)=secx

tanx(1/tanx)(1/cosx)=secx

cross out tanx with (1/tanx) and your left with (1/cosx) which is secx.

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