Math
Degree to radian conversion.
Definition
Degrees and radians are two units for measuring angles. To convert between them, use the fact that 180° equals π radians. Multiply degrees by π/180 to get radians, or multiply radians by 180/π to get degrees.
Examples
Real-world.
- 1 90° × π/180 = π/2 radians
- 2 π/4 radians × 180/π = 45°
- 3 360° = 2π radians, a full circle
Key Fact
Radians = Degrees × π/180; Degrees = Radians × 180/π