53-56 - Using Sum-to-Product Formulas Solve the equation by first using a Sum-to-Product Formula. 53. sin 0 + sin 30 = 0 54. cos 50 – cos 70 = 0 55. cos 40 + cos 20 = cos 0 56. sin 50 - sin 30 = cos 40

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A: Explanation of the solution is given below...

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Q: Verify the identity.

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

A: We’ll answer the first question since the exact one wasn’t specified. Please submit a new question…

Q: 28. Find the exact solutions in the interval 0sx< 2n . cos 2x - cosx (hint: use the formula cos 20 -…

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Q: 12) Solve for the exact solutions of the equation 4 cos²(x)- 3 – Oin the interval [0, 2n).

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