Determine the magnitude and direction  of F so that this force has components of 40 lb acting from A toward B and 60lb acting from A toward C on the frame.

1. 

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Determine the magnitude and direction thetaa of F so that this force has components of 40 lb acting from A toward B and 60lb acting from A toward C on the frame.
[A]. F = 44.7 lb, thetaa = 22.9°
[B]. F = 80.3 lb, thetaa = 46.2°
[C]. F = 62.9 lb, thetaa = 37.1°
[D]. F = 72.1 lb, thetaa = 56.3°

Answer: Option B

Explanation:

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