3-d

Question: The angle between the straight lines $\frac{x+1}{2}=\frac{y-2}{5}=\frac{z+3}{4}$ and $\frac{x-1}{1}=\frac{y+2}{2}=\frac{z-3}{-3}$ is

1) $45{}^\circ $

2) $30{}^\circ $

3) $60{}^\circ $

4) $90{}^\circ $

Solution:

Explanation: No Explanation

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