### Home > PC3 > Chapter Ch8 > Lesson 8.2.2 > Problem 8-75

The average high temperature for Glen Rock, PA, can be modeled using a sinusoidal function. The highest average temperature of

Plot the given points for the highest temperature and the lowest temperature.

Half of the vertical distance between the low point and the high point is the amplitude.

Identify the location of the midline. This is the vertical shift.

Double the -distance between the low point and the high point for the period. Then calculate

*.*

Using a cosine function, the horizontal shift is the horizontal distance from the -axis to the first high point.