I'm really stuck with part b of this question, even where to start. I think I keep over complicating it. If anyone could help that'd be amazing!
2026-03-30 13:37:30.1774877850
magnitude of unknown force on wall bracket question
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Hint: resolve $F_2$ and $F_3$ into $x$ and $y$ components. Subtract them from the given resultant vector. The result is $F_1$ in components. Now change that to magnitude and compute $\theta$.