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Question
Choose the correct alternative:
The angle between the lines `(x - 2)/3 = (y + 1)/(-2)`, z = 2 ad `(x - 1)/1 = (2y + 3)/3 = (z + 5)/2` is
Options
`pi/6`
`pi/4`
`pi/3`
`pi/2`
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Solution
`pi/2`
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