The resultant of non-concurrent force system is that force, which will have the same rotational and translation effect as the given system of forces, It may be a force, a pure moment or a force and a moment.
R = {(∑H)2+(∑V)2}1/2
Tan θ = ∑V/∑H
∑M = R ⋅ d
Where,
∑H = Sum of all horizontal component
∑V = Sum of all vertical component
∑M = Sum of the moment of all forces
d = Distance between the resultant force and the point where moment of all forces are taken.