Using product-to-sum formulas  rewrite the product as a sum or difference. 7 cos(−6β) sin 2

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Q: Product To Sum: Rewrite as a Sum or Difference (Choose one of the 2) 5cos 60 · Cos O cos 2y - sin5y

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A: let x =1+cosα1-cosαsin3αwkt (a+b)(a-b) = a2-b2sin2α+cos2α = 1 (trignometric identity)

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Q: 53-56 - Using Sum-to-Product Formulas Solve the equation by first using a Sum-to-Product Formula.…

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