lim(n to oo)ncos((pi)/(4n))"sin"((pi)/(4...

`lim_(n to oo)ncos((pi)/(4n))"sin"((pi)/(4n))=k`, then k is equal to

A

`pi/4`

B

`pi/3`

C

`pi`

D

None of these

Verified by Experts

The correct Answer is:

A

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