3-d

Question: The angle between the lines $\frac{x}{1}=\frac{y}{0}=\frac{z}{-1}$ and $\frac{x}{3}=\frac{y}{4}=\frac{z}{5}$ is

1) ${{\cos }^{-1}}\frac{1}{5}$

2) ${{\cos }^{-1}}\frac{1}{3}$

3) ${{\cos }^{-1}}\frac{1}{2}$

4) ${{\cos }^{-1}}\frac{1}{4}$

Solution:

Explanation: No Explanation

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