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January 31, 2015

January 31, 2015

Posted by **stacey graham** on Wednesday, May 5, 2010 at 9:25pm.

how to simplify

- trig -
**Reiny**, Wednesday, May 5, 2010 at 9:47pmsec^2x/tanx -(tanx)

= (1/cos^2x)(cosx/sinx) - sinx/cosx

= 1/(sinxcosx) - sinx/cosx

= (1 - sin^2x)/(sinxcosx)

= cos^2x / (sinxcosx)

= cosx/sinx

= cot x

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