Find the derivative of cot x

1.	Find the derivative of cot x
Answer» Cotx=1/tanxAs u. vu`-uv` ---- = ----------- v. v^2 = tanxd(1)/dx-1d(tanx)/dx -------------------------------------- tan^2x = tanx(0)-1sec^2x ------------------------- tan^x= -sec^2x÷tan^x= -1/sin^2x= -cosec^2x

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