Math, asked by kumarisaloni5324, 1 day ago

find value of sin power 4 A + cos power 4 A

Answers

Answered by kashishparmaristhere

0

Answer:

cos4A−sin4A=(cos2A−sin2A)(cos2A+sin2A)

=(cos2A−sin2A).1

=cos2A−(1−cos2A)

=2cos2A−1.

Hence, the answer is 2cos2A−1.

Step-by-step explanation:

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