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OpenStudy (anonymous):
verify: using trig idintites sin^4x+2sin^2xcos^2x+cos^4x=1
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OpenStudy (raden):
it same like : (sin^2 (x) + cos^2 (x))^2 = 1 we knowed that the identity sin^2 (x) + cos^2 (x) = 1 so, 1^1 = 1 LHS = RHS
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