Physics, 28.10.2021 04:30, innocentman69

I don't understand at all, please help if you're able! Part A. Find the direction and of the vector r (arrow above, pointing right) [?° ccw from the +x-axis
Part B. Find the magnitude of the vector r (arrow) [? m]
Part C. Suppose that rx and ry are doubled, find the direction and the magnitude of the new vector r (arrow)'
Part D. r' = ? m

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I don't understand at all, please help if you're able! Part A. Find the direction and of the vecto...