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September 18, 2014

September 18, 2014

Posted by **eddie** on Friday, February 4, 2011 at 2:37pm.

sec^2x times cot x minus cot x = tan x

- trig -
**Reiny**, Friday, February 4, 2011 at 3:29pmLS = (1/cos^2 x)(cosx/sinx) - cosx/sinx

= 1/(cosxsinx) - cosx/sinx

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

= sin^2x/(sinxcox)

= sinx/cosx

= tanx

= RS

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