Calculating Net Force: Solving for Unknowns in Vector Addition

[MaryBarnes]

Yes, that's correct, but you need to say that $F_{net}$ points to the left with 40° angle between the vector and the horizontal (i.e. points in the NW direction), otherwise it may seem as though it would point to the right (NE direction), which would be incorrect.

Ok, thanks for mentioning that. Thank you for all of your help! Now I actually understand how work with these equations!