Question: Let A = 1 15 Part A: Determine tan 9 using the sum formula. Show all necessary work in the calculation. (5 points) Part B:


Let A = 1 15 Part A: Determine tan 9 using the sum formula. Show all necessary work in the calculation. (5 points) Part B: Determine cos @ using the difference formula. Show all necessary work in the calculation. (5 points)
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