Statics and Mechanics question, for Engg 205 at U Calgary.

[ps123]

Homework Statement

The 64-m-tall tower is supported by three cables that exert forces Fab,Fac,Fad and on it. The magnitude of each force is 2.52 kN. Express the total force exerted on the tower by the three cables in terms of components.

http://phga.pearsoncmg.com/phga2/web/BeEnMeSt001/Public_Html/Chapter02/aaccbhb0.jpg

Homework Equations

N/a

The Attempt at a Solution

I've tried to split them into their components so that I take every triangle and try to find the direction cosines and times that by the total magnitute to find the x, y and z magnitudes but I don't think that's right.

 

[Pyrrhus]

Show me your positions vectors for C, B and D with respect to A.