How to convert degrees to radians
Three simple steps
- Start with the degree measure.
- Multiply by π/180.
- Simplify the numerical fraction while keeping π.
Worked example
For 135°, calculate 135 × π/180. Reduce 135/180 to 3/4, giving 3π/4 radians.
Why keep π?
The exact form avoids approximation and is especially useful in trigonometry and calculus. Use the calculator's decimal precision control when a numerical value is needed.
Continue learning