Convert Degrees to Radians with the TI-84 Plus Calculator

The functions housed in the TI-84-Plus calculator's Angle menu allow you to convert between degrees and radians or from radians to degrees. To convert degrees to radians, follow these steps:

1. Put the calculator in Radian mode.

2. If necessary, press [2nd][MODE] to access the Home screen.

3. Enter the number of degrees.

4. Press [2nd][APPS][1] to paste in the degree function.

5. Press [ENTER] to convert the degree measure to radians.

   

   If you’re a purist (like me) who likes to see radian measures expressed as a fractional multiple of

   

   whenever possible, continuing with the following steps accomplishes this goal if it’s mathematically possible.

6. Press

   

   to divide the radian measure by

   

7. Press [MATH][1][ENTER] to convert the result to a fraction, if possible.

To convert radians to degrees:

1. Put the calculator in Degree mode.

2. If necessary, press [2nd][MODE] to access the Home screen.

3. Enter the radian measure.

   If the radian measure is entered as an arithmetic expression, surround that expression with parentheses.

4. Press [2nd][APPS][3] to paste in the r function.

5. Press [ENTER] to convert the radian measure to degrees.