Question: Can you please provide a step-by-step explanation to solve the following: Complete the identity. 27) cos ('x + [3) cos (a [3) = ?

Complete the identity. 27) cos ('x + [3) cos (a [3) =

Can you please provide a step-by-step explanation to solve the following:

?

Complete the identity. 27) cos ('x + [3) cos (a [3) = ?

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