Determine the magnitude and direction theata of F1 so that the resultant force is directed vertically upward and has a magnitude of 800N.
The Attempt at a Solution
I have difficulty of where to start the problem? do i sum up the forces of the x axis with unknowns in it and forces of the y axis with the unknown forces...where should i start....and how do i start solving the problem????
Please someone help me with this....