### Home > CCA2 > Chapter 7 > Lesson 7.1.4 > Problem 7-56

7-56.

What angle in the first quadrant could you reference to help you find the sine and cosine of each of the following angles?

60°

Use the eTool below to find the needed reference angles.

Click the link to the right for the full version: *7-56 HW eTool*