Let f(x) =cos (cos x). Then which one is...

Let `f(x) =cos (cos x)`. Then which one is not correct?

A

f (x) is increasing in `(-pi/2, pi/2)`

B

f (x) is decreasing in `(-pi/2,0)`

C

f (x) is increasing in `(0,pi/2)`

D

f (x) is decreasing in `((pi)/(2),pi)`

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The correct Answer is:

A

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