The average monthly temperature changes from month to month. Suppose that, for a given city, we can model the average temperature in a month with the following function.f(t)=60−27sin(6πt)In this equation, f(t) is the average temperature in a month in degrees Fahrenheit, and t is the month of the year (January=1, February =2,…). Find the following. If necessary, round to the nearest hundredth.Time for one full cycle of f: □ monthsNumber of cycles off per month: □Minimum average temperature in a month: □
Q. The average monthly temperature changes from month to month. Suppose that, for a given city, we can model the average temperature in a month with the following function.f(t)=60−27sin(6πt)In this equation, f(t) is the average temperature in a month in degrees Fahrenheit, and t is the month of the year (January=1, February =2,…). Find the following. If necessary, round to the nearest hundredth.Time for one full cycle of f: □ monthsNumber of cycles off per month: □Minimum average temperature in a month: □
Period of Sine Function: To find the time for one full cycle of f, we need to determine the period of the sine function. The period of a sine function is given by B2π, where B is the coefficient of t inside the sine function.
Calculate Period: In the function f(t)=60−27sin(6πt), the coefficient of t is 6π. So, the period is (6π)2π=2π×(π6)=12.
Time for One Cycle: The time for one full cycle of f is 12 months.
Cycles per Month: To find the number of cycles of f per month, we take the reciprocal of the period. Since the period is 12 months, the number of cycles per month is 121.
Minimum Average Temperature: The minimum average temperature occurs at the lowest point of the sine function, which is when the sine function is at its minimum value of −1.
Minimum Value Calculation: The minimum value of the function f(t) is therefore 60−27×(−1)=60+27=87.
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