Math, asked by sandipgyn123, 11 months ago

provet that Cos4A +Sin4A + 2Sin2A Cos2 A= 1

Answers

Answered by sandy1816

4

Step-by-step explanation:

cos⁴A+sin⁴A+2sin²Acos²A

=(cos²A)²+(sin²A)²+2sin²Acos²A

=(sin²A+cos²A)²

=1²

=1

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