What is the derivative of `1/(tan^2x)`

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The derivative of `1/(tan^2x)` has to be determined.

`1/(tan^2x)`

=> `cot^2x`

Use the product rule to find the derivative of `cot^2x` .

This gives `2*cot x*(-csc^2x)`

**The derivative of `1/(tan^2x)` is**` -2*cot x*csc^2x`

the required derivative is -2cotxcosec^2x

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