Math, asked by rutuyenare, 11 hours ago

cos ⁴A-sin⁴A+1=2cos²A.
Pls Answer.

Answers

Answered by Anonymous

1

Step-by-step explanation:

cos ⁴A-sin⁴A+1=2cos²A.

cos ⁴A-sin⁴A = 2cos²A - 1

cos ⁴A-sin⁴A = cos2A

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