Math, asked by devkumar2006113, 30 days ago

sin4A-cos4A=sin2A-cos2A=1-2cos2A

Answers

Answered by sandy1816

4

Answer:

sin⁴A-cos⁴A

=(sin²A-cos²A)(sin²A+cos²A)

=sin²A-cos²A

=1-cos²A-cos²A

=1-2cos²A

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