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**1. Homework Statement**

The magnitude of the vector is 6 m, and points 35 degrees north of west. Find the x component of the vector.

**2. Homework Equations**

x = |R|cos(theta)

**3. The Attempt at a Solution**

I am confused about what degrees to input into the cosine function. I know that the vector is pointing 35 degrees north of west, which means that the x component will be negative, but there are two ways I could do it am I am not sure which one I should do. First, I could tack on a negative and calculate -(6 m)cos35 = -4.9 m. Another way is not tack on a negative and calculate (6 m)cos145 = -4.9 m. Which method is better, and which one should I use on a regular basis?