### Home > PC > Chapter 4 > Lesson 4.1.3 > Problem 4-41

4-41.

Find the exact values of the following trig expressions.

1. This is the 2nd quadrant.

2. Cosine is the-value.

3. Cosine is negative in the 2nd quadrant.

1. Sine is

-value.

2. What are the side lengths?

3. Is it positive or negative?

1. Be sure to take the ratio of

2. Watch your signs!