-1500cosxsinx + 900sinx + 49.05cosx = 0

solve for x in degrees

This came out of a mechanics question (hibbeler 14th 11-37), and no matter how i spun it, i could not get an answer. It should be either 4.71 degrees or 51.2 degrees. This is from the answer book, but all it says is solve numerically.

Equilibrium Position. The system is in equilibrium if = 0. do dV = -1500 sin 0 cos e + 900 sin e + 49.05 cos 0 = 0 do Solving numerically, 0 = 4.713 = 4.710 or 0 = 51.220 = 51.20