Trigonometry
posted by Hannah .
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?

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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