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[" 5"cos(2)=8in^(2)3A-(cos^(2)3A)/(cos^(...

[" 5"cos(2)=8in^(2)3A-(cos^(2)3A)/(cos^(2)A)" is equal to "],[" (a) "cos2A],[" (d) "(1)/(8cos2A)],[" (d) "(1)/(8cos2A)]

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8sin(x/8)cos(x/2)cos(x/4)cos(x/8) is equal to

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