| A | B |
|---|
 | One Radian |
| When the radius equals the length of the arc | Angle is one radian |
| One radian is aprroximately | 57.3 degrees |
| 360 degrees | Two Pi Radians |
| Pi Radians | 180 degrees |
| Common Angular Velocity Unit | RPM (Revolutions per Minute) |
| Kinematics Angular Velocity Unit | Rad/sec (Radians per second) |
| 2 pi / 60 | Multiply rpm by to get rad/sec |
| Spreadsheet angles | are in radians |
| =RADIANS(cell) | Converts Excel degrees to radians |
| =DEGREES(cell) | Converts Excel radians to degrees |
| Trig functions in Excel | only work with radians |
