Mathematics Three Dimensional Geometry Angle between two lines

What is the angle between the lines \(\rm \dfrac{x-2}{1}=\dfrac{y+1}{-2}=\dfrac{z+2}{1}\) and \(\rm\dfrac{x-1}{1}=\dfrac{2y+3}{3}=\dfrac{z+5}{2}?\)

1
\(\dfrac{\pi}{2}\)
2
\(\dfrac{\pi}{3}\)
3
\(\dfrac{\pi}{6}\)
4
None of the above

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