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Solving horizontally, F_x = 82.1444 N (as shown above)
Vertical component F_y = 70 sin 50 + 80 sin 65 + 50 sin 135
= 161.474
R=
Direction= angle it makes with x axis = arctan (161.474/82.1444) = 63.036 degrees
Qno.5
The point was not plotted that was why it was marked wrong.
Magnitude = r =...