cos^2 2x=? tell me plz
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Answer:
1-sin²2x is the answer of this question
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Step-by-step explanation:
we know that,
cos2x = 2 cos^2x -1 or 1- 2sin^2x
squaring on both sides
cos^2 2x = 4 cos^4 x +1 or 1 + 4sin^4x
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