The angle subtended by an arc equal to the radius is
Correct answer: A. 1 radian
- A. 1 radian
- B. One degree
- C. 1 revolution
- D. All
Explanation
An angle of 1 radian subtends an arc on a circle that is equal in length to the radius of the circle. This is one of the defining properties of the radian measure.
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About Angular Displacement
Angular displacement measures the change in a body’s angular position and is expressed in radians or degrees, with anticlockwise and clockwise directions assigned signs. It connects to arc length, angular velocity and angular acceleration, and must be distinguished from ordinary linear displacement in rotational motion.
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