MCQ — Attempt all

1. What is the unit of angle measurement in radian measure?
   • Degree
   • Minute
   • Radian
   • Second
2. When is an angle of one radian formed?
   • When the arc length is equal to the diameter
   • When the arc length is equal to the radius
   • When the arc length is equal to the circumference
   • When the radius is zero
3. If the radius of a circle is r, what is its circumference?
   • πr
   • 2πr
   • πr²
   • 2r
4. π radians is equal to how many degrees?
   • 90°
   • 120°
   • 180°
   • 360°
5. 2π radians is equal to how many degrees?
   • 90°
   • 180°
   • 270°
   • 360°
6. What is the radian value of 30°?
   • π/6
   • π/4
   • π/3
   • π/2
7. What is the radian value of 60°?
   • π/6
   • π/4
   • π/3
   • π/2
8. π/4 radians is equal to how many degrees?
   • 30°
   • 45°
   • 60°
   • 90°
9. In the formula θ = s/r, in which unit is θ expressed?
   • Degree
   • Radian
   • Metre
   • Centimetre
10. In a circle, if s = 14 cm and r = 7 cm, what is θ?
    • 1 radian
    • 2 radians
    • 7 radians
    • 14 radians