Find a unit vector in the same direction as $3 i-7 j.$
Added by Ruben O.
Step 1
The magnitude of a vector $\vec{v} = \begin{pmatrix} v_1 \\ v_2 \end{pmatrix}$ is given by $|\vec{v}| = \sqrt{v_1^2 + v_2^2}$. So, in this case, the magnitude of $3i-7j$ is: $$ |3i-7j| = \sqrt{(3)^2 + (-7)^2} = \sqrt{58} $$ Show more…
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