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D Question 20 Use Power Reducing Formulas to rewrite cost a so that the expression does not contain exponents. O & cos(x) - 4cos(3x) O

D Question 20 Use Power Reducing Formulas to rewrite cost a so that the expression does not contain exponents. O & cos(x) - 4cos(3x) O & cos(z) + 1 cos(3x) + cos(2x) O - cos(z) - 1cos(3x) - cos(2x) O & cos(x) + 4 cos (3x)

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