### Home > PC > Chapter 9 > Lesson 9.3.5 > Problem 9-159

9-159.

Find possible equations for the graph below in terms of both sine and cosine. Homework Help ✎

Sine Function

1. There is no horizontal shift.

2. It is shifted down 3.

3. The period is π. Find frequency: *pb* = 2π.

4. The amplitude is 2.

Cosine Function

Be careful with your sign.