If cos (A + B) = alpha cos A cos B + beta sin | vedclass

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(C) The standard trigonometric identity for the cosine of a sum of two angles is given by:$\cos (A + B) = \cos A \cos B - \sin A \sin B$Comparing this

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$(1, -1)$

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(C) The standard trigonometric identity for the cosine of a sum of two angles is given by:$\cos (A + B) = \cos A \cos B - \sin A \sin B$Comparing this identity with the given equation:$\cos (A + B) = \alpha \cos A \cos B + \beta \sin A \sin B$By equating the coefficients of the corresponding terms on both sides,we get:$\alpha = 1$$\beta = -1$Therefore,$(\alpha, \beta) = (1, -1).$

If $\cos (A + B) = \alpha \cos A \cos B + \beta \sin A \sin B,$ then $(\alpha, \beta) =$

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