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Which expression is the derivative of cosec x?
A-cosec^2 x
Bcosec x cot x
Csec x cot x
D-cosec x cot x
Answer & Solution
Correct answer: D. -cosec x cot x
Writing cosec x as (sin x)^-1 gives -cos x / sin^2 x = -cosec x cot x.
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