### Home > PC > Chapter 4 > Lesson 4.2.2 > Problem4-88

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?

$+1$

$+3$

Flip it upside down.

Horizontal shift to the left $\frac{π}{2}$.

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