### Home > A2C > Chapter 8 > Lesson 8.1.4 > Problem 8-55

8-55.

What angle in the first quadrant could you reference to help you find the sine and cosine of each of the following angles? 8-55 HW eTool (Desmos). Homework Help ✎

330°

120°

113°

203°

30°

60°

Use the eTool below to find the needed reference angles.

Click the link to the right for full version: A2C 8-55 HW eTool