First derivative of cot(x) with respect to x is

1.	First derivative of cot(x) with respect to x is
A.	tan(x)
B.	-tan(x
C.	-cosec2(x)
D.	-cosec(x)cot(x
Answer» D. -cosec(x)cot(x

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First derivative of cot(x) with respect to x is

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