Determine the net force of two opposing forces.

What is the net force acting on the object that has a force of 20.9N 34 degrees West of North and a second force of 34.5N 42 degrees East of North acting on it?

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...(a^2 + b^2), tan(x) = opp/adj).
We have two forces:
F1: 29.9 N, acting at 34 degrees West of North (let's call it 34 degrees)
F2: 34.5 N, acting at 42 degrees East of North (let's call it -42 degrees).
Both forces have a component along the North-South axis.
For F1, this is ...