Need help determining force behind certain vectors

[End_John_Ear]

I need to find the forces in AB, CD, BE and BC

http://img205.imageshack.us/img205/7121/draftingkp7zt4.png

Any help would be much appreciated.

 

[Mindscrape]

Are you planning on using Newton's Laws? They can give you a start.

 

[chaoseverlasting]

You can also use the sine rule since the system is in equilibrium. sina/a=sinb/b=sinc/c where a,b,c are the lengths of the sides and the sina/b/c represent the sine of the angle opposite the side a/b/c.

 

[haynewp]

Make a FBD of the weight with the 2 cables cut. Sum forces in the horiz and vert directions to get the force in each cable.