Math, asked by nitinsoni9812, 1 year ago

If alpha and beta are the roots of the equation a cos x+b sin x =c then prove that cos (alpha -beta )= 2c^2/a^2 + b^2 - 1

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Answered by singhjaspreet46

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QWERFGHIUGFWEDFGBNWSDFGHOIJHGFASDFVBNMZAQWERTYUIOMN

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