Radian is a unit of angular displacement which can also be measured in degrees. How many radians are equal to one degree?
Correct answer: B. π/180
- A. 180/π
- B. π/180
- C. 2π/180
- D. π/57.3
Explanation
180° = π radians, so 1° = π/180 radians. This standard conversion gives option B.
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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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