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

Let `n` be a positive integer such that `sinpi/(2n)+cospi/(2n)=(sqrt(n))/2dot` Then `6lt=nlt=8` (b) `4

A

`6 le n le 8`

B

`4 lt n le 8`

C

`6 lt n lt 8`

D

`4 lt n lt 8`

Text Solution

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The correct Answer is:
D
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ARIHANT MATHS ENGLISH-TRIGONOMETRIC EQUATIONS AND INEQUATIONS-Exercise (Single Option Correct Type Questions)
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