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Homework Statement
Three forces are applied to a tree sapling, as shown in the figure, to stabilize it. If vector F A = 380 N and vector F B = 260 N, find vector F C in magnitude and direction.
http://www.webassign.net/gianpse4/12-45.gif
Homework Equations
The Attempt at a Solution
I am not sure where to begin...Help!