Posted by Hannah on .
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 
Steve,
plug in t=2 to get
18.25 sin(pi/6 * 2  2.09) + 61.15 = 45.38
for June, plug in t=6.