3. Vectors

Let $\stackrel{\rightharpoonup }{A}=\widehat{i}+2.0\widehat{j}$, $\stackrel{\rightharpoonup }{B}=-7.0\widehat{i}$, and $\stackrel{\rightharpoonup }{C}=3.0\widehat{i}+\widehat{j}$. What is the direction of $\stackrel{\rightharpoonup }{A}+\stackrel{\rightharpoonup }{B}+\stackrel{\rightharpoonup }{C}$? Express your answer in degrees counter clockwise from the positive x axis.

Let $\stackrel{\rightharpoonup }{A}=\widehat{i}+2.0\widehat{j}$, $\stackrel{\rightharpoonup }{B}=-7.0\widehat{i}$, and $\stackrel{\rightharpoonup }{C}=3.0\widehat{i}+\widehat{j}$. What is the magnitude of $\stackrel{\rightharpoonup }{A}+\stackrel{\rightharpoonup }{B}+\stackrel{\rightharpoonup }{C}$?

Determine the angle between the direction of vector A = 3.00i + 1.00j and vector B = -3.00i + 3.00j.