If F1 = F2 = 30lb, determine the angles  and  so that the resultant force is directed along the positive x axis and has a magnitude of FR = 20

1. 

pg2-12

If F1 = F2 = 30lb, determine the angles thetaa and phii so that the resultant force is directed along the positive x axis and has a magnitude of FR = 20 lb.
[A]. thetaa = phii = 70.5°
[B]. thetaa = phii = 41.4°
[C]. thetaa = phii = 19.47°
[D]. thetaa = phii = 18.43°

Answer: Option A

Explanation:

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