Question: f 1 = 1 0 kn angle 3 0 ( going up ) , f 2 = 1 2 angle 2 7 0 , f

f1=10kn angle 30(going up), f2=12 angle 270, f3=8kn angle 75(going down) answer need to be 18.2kn and -53.9 degrees. How to get it?

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