A block is pushed across a floor by a constant force that is applied at downward angle (Figure). Figure gives the acceleration magnitude a

A block is pushed across a floor by a constant force that is applied at downward angle θ (Figure). Figure gives the acceleration magnitude a versus a range of values for the coefficient of kinetic friction Ft between block and floor a_1?= 3.0m/s², ?k_2?= 0.20, and ?_k3= 0.40. What is the value of θ?

+HA 10 -d