For some α ∈ R, \cos^2\\alpha,\sin^2\\alpha are roots of the quadratic equation x^2 + bx+ c = 0 and \cos^4\\alpha,\sin^4\\alpha are roots of the quadratic equation x^2 + qx + r = 0 then b^2 -q^2 =

AP and TS EAMCET Engineering Model Paper 19

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For some α ∈ R, cos2α,sin2α are roots of the quadratic equation x2+bx+c=0 and cos4α,sin4α are roots of the quadratic equation x2+qx+r=0 then b2−q2=

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