JEE MATHEMATICS MCQ: MULTIPLE AND SUBMULTIPLE ANGLES

1 Easy

1 of 1

Application +4 | -1

The value of

{\cos ^2}\,\,\frac{\pi }{{16}} + {\cos ^2}\,\,\frac{{3\pi }}{{16}} + {\cos ^2}\,\,\frac{{5\pi }}{{16}} + {\cos ^2}\,\,\frac{{7\pi }}{{16}}

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Correct option: A

Option A (2) is correct because using trigonometric identities, the expression simplifies to 2.

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