Math, asked by shreshta84, 1 year ago

sin^8A-cos^8A=(sin²A-cos²A)(1-2sin²A×cos²A)

Answers

Answered by shibbu38
9
LHS = sin⁸ A-cos⁸ A = [(sin⁴ A +cos⁴ A)*(sin⁴ A - cos⁴ A)] 
= [(sin⁴ A +cos⁴ A)*{(sin² A + cos² A)*(sin² A - cos² A)] 
= [(sin⁴ A +cos⁴ A)* (sin² A - cos² A)]

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