Question:
The angle between the lines $\frac{x}{2}=\frac{y}{2}=\frac{z}{1}$ and $\frac{x-5}{4}=\frac{y-2}{1}=\frac{z-3}{8}$ is is
A. $\cos ^{-1}\left(\frac{3}{4}\right)$
B. $\cos ^{-1}\left(\frac{5}{6}\right)$
C. $\cos ^{-1}\left(\frac{2}{3}\right)$
D. $\frac{\pi}{3}$
Solution:
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