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sin^4x+cos^4x=

sin^4x+cos^4x=

Grade:12

1 Answers

Nishant Vora IIT Patna
askIITians Faculty 2467 Points
9 years ago
Hello student, Please find the answer to your question below

sin^4x+cos^4x
= (sin2x + cos2x)2- 2 sin2x cos2x
= 1- 2 sin2x cos2x [because sin2x + cos2x = 1]

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