What are the steps on solving this?

The figure shows a block of mass m=3kg being acted on by a force of magnitude F=35N which makes an angle 0 = 150 with the x-axis and has a negative y component. If the acceleration of the block has an x component of a=3.6 m/s2, what is the coefficient of kinetic friction /k? (A) 0.3 (B) 0.5 X (C) 0.6 DF (D) 0.7 (E) 0.9