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The average temperature, in °F, for Atlanta, GA is modeled by the sinusoidal function y = 18.25 sin(pi/6 t - 2.09) + 61.15 where t is the time in months and January is t=1.

What is the average Temperature for the month of February?

Using the same equation, what is the average temperature in Atlanta, GA, for the month of June?

  • Trigonometry -

    plug in t=2 to get

    18.25 sin(pi/6 * 2 - 2.09) + 61.15 = 45.38

    for June, plug in t=6.

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