Posted by Allessandra on Saturday, December 17, 2011 at 12:23am.
Differentiate 1/tanx
I got sec^2 / tan^2x, which is correct, but the answers said I could also simplify this to cosec^2. How would you do that?
Thanks =)

Math  Steve, Saturday, December 17, 2011 at 5:50am
sec^2/tan^2 = sec^2 * cos^2/sin^2 = 1/sin^2 = csc^2

Math  Steve, Saturday, December 17, 2011 at 5:51am
also, just as
tan' = sec^2
cot' = csc^2 as you proved
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