Calculating magnitude and orientation of a resutanr force?

[williams06]

calculating magnitude and orientation of a resutanr force?

• A mass of 10 kg has 3 forces exerted against it, as shown in the diagram below. Given the information below, calculate the magnitude and orientation of the resultant force.
F1 has a magnitude of 10.5 N, with θ = 15° to the horizontal
F2 has a magnitude of 55.0 N, with θ = 33° to the vertical
F3 has a magnitude of 23.9 N, with θ = 45° to the horizontal??/
i just have no clue please help.

I do not wish for an answer just some guidence as where to start.

 

[Redbelly98]

Force is a vector, so you need to use the rules of vector addition to add the three force vectors.