JEE MATHEMATICS MCQ: TRIGONOMETRY RATIOS

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The value of

\left(1+\cos \frac{\pi}{6}\right)\left(1+\cos \frac{\pi}{3}\right)\left(1+\cos \frac{2 \pi}{3}\right)

\left(1+\cos \frac{7 \pi}{6}\right)

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Correct option: A

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Option A (

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) is correct because substituting the values of the cosine functions and simplifying the expression leads to the result

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