What is the SI unit of plane angle?
Understand the Problem
The question is asking for the SI unit that is used to measure a plane angle. This is a fundamental concept in geometry and physics.
Answer
radian (rad)
The SI unit of plane angle is the radian, represented by 'rad'.
Answer for screen readers
The SI unit of plane angle is the radian, represented by 'rad'.
More Information
A radian is defined as the plane angle subtended at the center of a circle by an arc whose length is equal to the radius of the circle. Despite being dimensionless, it is a standard unit for angle measurement.
Tips
One common mistake is confusing the radian with the steradian, which is the unit for measuring solid angles.
Sources
- The unit of plane angle is - BYJU'S - byjus.com
- What is the SI unit of a plane angle? - Quora - quora.com
- Plane Angle | The Units and Constants Handbook at KnowledgeDoor - knowledgedoor.com
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