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**1. Homework Statement**

http://i.minus.com/iVbsy2FomprcM.PNG [Broken]

http://i.minus.com/iVbsy2FomprcM.PNG [Broken]

**2. Homework Equations**

F=ma

**3. The Attempt at a Solution**

I'm struggling with the normal force and I'm not sure if the component of the force F is the cosine or sine. I see examples where its sine but that doesnt make any sense to me. Isn't the x direction supposed to be cosine?

F

_{n}= mgsinθ

81.2cosθ - F

_{n}μ = 9.23

-F

_{n}μ = -65.897

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