Question: 5. Use an appropriate method to solve. cos x sinx= 2 2 1-cosx 3 tanx 2 6. Hank's Heating Oil is a very seasonal

5. Use an appropriate method to solve. 1-cos2 x V3 tan2x COS xsinx 2 2 Hanks Heating Oil is a very seasonal enterprise, with

5. Use an appropriate method to solve. cos x sinx= 2 2 1-cosx 3 tanx 2 6. Hank's Heating Oil is a very seasonal enterprise, with sales in the winter far exceeding sales in the summer. Monthly sales for the company can be modeled by: s(t) = 1600 cos s(=t-72) + +5100 Where S(t) is the average sales in month t, where January is t = 1. What is the average sale amount for July? For what months of the year are sales less than $4000?

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