A circular arc of length 22 cm subtends an angle θ at the centre of the circle of radius 21 cm. The value of θ is
A. 90°
B. 50°
C. 60°
D. 30°
Answer:C
A circular arc of length 22 cm subtends an angle θ at the centre of the circle of radius 21 cm. The value of θ is
A. 90° B. 50° C. 60° D. 30°