Solve: | |||
| 1) | This unit circle shows an angle of 45°. What is the arc length of the arc? |
2) | This unit circle shows an angle of 270°. What is the arc length of the arc? |
| 3) | This unit circle shows an angle of 90°. What is the arc length of the arc? |
4) | This unit circle shows an arc of 5π/6 . What is the measure of the angle shown? |