Question: If the angle between the lines, $\frac{x}{2}=\frac{y}{2}=\frac{z}{1}$ and $\frac{5-x}{-2}=\frac{7 y-14}{p}=\frac{z-3}{4}$ is $\cos ^{-1}\left(\frac{2}{3}\right)$, then $p$ is equal to:
$-\frac{4}{7}$
$\frac{7}{2}$
$-\frac{7}{4}$
$\frac{2}{7}$
Correct Option: , 2
Solution:
Solution not required
