(Solved): The resultant of the three forces acts along the positive y axis and has a magnitude of F=450lb. (F ...

The resultant of the three forces acts along the positive $y$ axis and has a magnitude of $F=450\mathrm{lb}$. (Figure 1) Figure 1 of 1 Determine the magnitude of ${\mathbf{F}}_3$. Express your answer to three significant figures and include the appropriate units. Part B Determine the coordinate direction angle $?$ of ${\mathbf{F}}_3$. Express your answer using three significant figures. Determine the coordinate direction angle $?$ of ${\mathbf{F}}_3$. Express your answer using three significant figures. Part D Determine the coordinate direction angle $?$ of ${\mathbf{F}}_3$. Express your answer using three significant figures.