Let n be a positive integer such that si...

Let `n` be a positive integer such that `sin(pi/(2n))+cos(pi/(2n))=(sqrt(n))/2dot` Then

A

`6 le n le 8`

B

`4 lt n le 8`

C

`6 lt n lt 8`

D

`4 lt n lt 8`

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The correct Answer is:

D

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