(csc^2x÷cotx)-cotx
using trigonometric identies, how do i find a single trigonometric function or a constant?

By using trigonometric identities, you can put everything into terms of sin and cos, making everything easier to put in relation to trigonometric identities.  Also, you can change the denominator (if necessary) in order to get the whole thing as one fraction.  From here, you should be able to simplify all of the trigonometric functions into (hopefully) only one function.

Hope this helps!

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