Radian is a unit of angular displacement that 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
One radian is equal to 180/π degrees. Thus, to convert from radians to degrees, multiply by 180/π, hence option B is correct one.
This question appeared on the UHS MDCAT 2011 paper, which you can sit online with every answer explained.
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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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