(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

[PLAIN]http://img715.imageshack.us/img715/8128/66497284.jpg [Broken]

2. Relevant equations

3. The attempt at a solution

I'm really confused about this question and not sure what to do. I've only been able to find the angles and don't really know what to do next. I also think that it i might need to know how to do cross products to find the expression but I'm not sure, since i haven't really learned about it yet. so i would not know when and how to apply it to this problem. If anyone can give me on how i should proceed in doing the problem in a. thanks.

Edit:

So i've tried to draw a perpendicular line from end of F to AB and would get something like this

Fab = Fcos55

i've actually thought of this before but i'm not so sure if this would be allowed, like if it's breaking any rules or somthing

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# Homework Help: Force vectors

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