Question: Each ordered pair given in Exercises is located on the graph of either y = a sin x or y = a cos x where

Each ordered pair given in Exercises is located on the graph of either y = a sin x or y = a cos x where the amplitude is |a| = 2.50. Use the trace feature on a calculator to determine the equation of the function that contains the given point. (All points are located such that the x value is between −π and π.)

(−1.20, 0.90)

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