### Home > PC > Chapter 6 > Lesson 6.2.1 > Problem6-73

6-73.

Use the diagram at right to find exact values of the following trig expressions.

1. $\sin(α)$

Use the values given in the diagram.

2. $\cos(α)$

Calculate the length of the base of the triangle. What should the sign be?

3. $\tan(α)$

Use the information in the triangle and your calculated base from part (b).