JEE MATHEMATICS MCQ: MULTIPLE AND SUBMULTIPLE ANGLES

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Application +4 | -1

k=\sin \pi / 18 \sin 5 \pi^{\prime} 18 \sin 7 \pi / 18

, then the numerical value of

k

is equal to

View answer and explanation

Correct option: C

1 / 8

Option C (

1 / 8

) is correct because it is obtained by using the product-to-sum trigonometric identities to simplify the expression.

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