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Homework Statement
http://img687.imageshack.us/img687/8767/meprob27.jpg
If the resultant force acts along the positive u axis, determine the resultant force and angle theta (red angle)
Homework Equations
law of sines
pythagorean theorem, etc
trig
parallelogram, head to tail methods, something probably missing, etc
The Attempt at a Solution
The resultant force comes from the 3 kN and 2 kN forces.
I try
-30 deg = tan-1(Fy / Fx)
Fy = (2 kN)(sin θ)
Fx = (3 kN) + (2 kN)(cos θ)
and I get stuck here, trying to go by just what I thought was usual trig / force vectors
If I have to draw another triangle to help solve, then I am not sure how.
Thank you.
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