### Home > PC > Chapter 7 > Lesson 7.1.1 > Problem 7-13

7-13.

The sine does not need a horizontal shift.

The cosine needs to be shifted *π* to the left.

The cosine needs to be flipped.

7-13.

The sine does not need a horizontal shift.

The cosine needs to be shifted *π* to the left.

The cosine needs to be flipped.