JEE MATHEMATICS MCQ: MULTIPLE AND SUBMULTIPLE ANGLES

1 Easy

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Understanding +4 | -1

1+\cos ^2 2 A

is equal to

View answer and explanation

Correct option: C

2\left(\cos ^4 \mathrm{~A}+\sin ^4 \mathrm{~A}\right)

Option C (

2(\cos ^4 A+\sin ^4 A)

) is correct because it is the simplified form of the given expression using trigonometric identities.

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