JEE MATHEMATICS MCQ: TRIGONOMETRIC EQUATIONS

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Application +4 | -1

Let

n

be a positive integer such that

\sin \frac{\pi}{2 n}+\cos \frac{\pi}{2 n}=\frac{\sqrt{n}}{2}

, then

View answer and explanation

Correct option: D

4 < n < 8

Option D (

4 < n < 8

) is correct because by squaring the given equation and substituting n=6, the equation is satisfied.

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