### Home > PC > Chapter 4 > Lesson 4.3.1 > Problem 4-124

4-124.

Draw a unit circle. In which quadrants is sine negative?

1. What special angle is this?

2. In which quadrants is cosine positive?

4-124.

Draw a unit circle. In which quadrants is sine negative?

1. What special angle is this?

2. In which quadrants is cosine positive?