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A real number θ is a root of the equation 7cos2x+4cosx−1=0. If pcos2θ+qcos2θ+r=0 where p,q,r are real constants then r can be

Answer» A real number θ is a root of the equation 7cos2x+4cosx1=0. If pcos2θ+qcos2θ+r=0 where p,q,r are real constants then
r can be


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