Angular Velocity and Acceleration

Example $1$:

A turbine blade of radius $5cm$ rotates an angle of $60.$ Find

the angle of rotation in radians:

Solution:

$($A$)$

$($A$)\frac{}{3}$rad

$($B$)\frac{}{2}$rad

$60**(2\frac{}{360})=\frac{}{3}$

$($C$)\frac{}{4}$rad

$($D$)60$rad