The derivative of cosec x is
...The derivative of cosec x is
tan x cosec x
-cot x cosec x
tan x sec x
-cot x sec x
Correct answer is B
cscx=1sinx
Using the quotient rule,
dydx=vdu−udvv2
= sinx(0)−1(cosx)(sinx)2
= −cosxsin2x
= (−cosxsinx)(1sinx)
= −cotxcscx
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