135- What is the length of the common perpendicular of the line $\dfrac{x-1}{4} = \dfrac{y+2}{3} = \dfrac{z-3}{1}$ and the $z$-axis? (1) $2/2$ (2) $2/4$ (3) $2/5$ (4) $2/6$
\textbf{135-} What is the length of the common perpendicular of the line $\dfrac{x-1}{4} = \dfrac{y+2}{3} = \dfrac{z-3}{1}$ and the $z$-axis?
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(1) $2/2$ \hfill (2) $2/4$ \hfill (3) $2/5$ \hfill (4) $2/6$
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