A fan blade, initially at rest, rotates with a constant acceleration of 0.029 rad/s2. What is the time interval required for it to reach a 6.58-rad displacement after starting from rest

The time interval is  

Explanation:

From the question we are told that

    The constant acceleration is

    The displacement is  

According to the second equation of motion we have that

given that the blade started from rest

      which is the initial angular velocity is 0

 So  

 =>  

substituting values  

=>    

=>    

i think its

and 1and 1