If y= sec^-1 [cosec x]+cosec^-1 [sec x]+...

If `y= sec^-1 [cosec x]+cosec^-1 [sec x]+sin^-1 [cos x]+ cos ^-1 [sin x]` then `(dy)/(dx)` is equal to a)0 b)2 c)-2 d)-4

A

0

B

2

C

-2

D

-4

Verified by Experts

The correct Answer is:

D

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