Question

Question No. 7
Radius vector of a particle moving on a circle is given by 7 = 2 cos 2ti - 2sin2tj. The speed of particle is (where ris in m and tis in s)
O 4 m/s
O 2 m/s
O 6 m/s
O 8 m/s​

Answer 1

Answer:

2m/s will be the answer i think