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OK this is how im doing this problem (Check my work on here)

First Step (finding net force):

Fnet = Wsin37 + Fa (exerted) = (250)(9.8)sin37 + 200 =

**1674 N**(briefly, Just tell me if it's sin or cos here! -- main confusion)

Second Step (finding power from givens):

P = (Fcos37) V = (1674cos37) (20) =

**2.67 x 10^4 W**

Again, Just check my work to see if i am doing it correctly. If not, then please give me a little help -- hint: im bad with conceptual understanding (try to help me visual what i did wrong!). Thanks and sorry if im asking for too much!