### Home > PC > Chapter 4 > Lesson 4.2.2 > Problem 4-88

4-88.

Find an equation in terms of sine and an equation in terms of cosine for the graph shown below.

Find the mid-line of the graph.

What is the vertical shift?

What is the amplitude?

What is the easiest shift for the sine?

What is the easiest shift for the cosine?

Flip it upside down.

Horizontal shift to the left

Use the eTool below to visualize this problem.

Click on the link to the right to view the full version of the eTool: *PCT 4-88 eTool*