Determine the amplitude, period, and phase shift of the function f(x) = 3 cos (2x-). Then graph one period of the functionf (x)? Find the values of x and y for the five key points. What is the domain and range of f(x)?

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Q: Exercises 67 and 68: Evaluate the expression. 67. cos (2 tan-¹ 60 68. sin (2 sin ¹x), x > 0

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