Question

Prove that:-

1+Cos^2 2x =2(cos^4x+sin^4x)

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Tell me the correct solution

Answer 1

Step-by-step explanation:

1+ cos^2 2x = 2(cos^4x + sin ^4x)

1+cos^2 2x = 2*1

cos^2 2x = 1

Answer 2

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