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The angle between the lines $\frac{x - 1}{2} = \frac{y - 2}{1} = \frac{z + 3}{2}$ and $\frac{x}{1} = \frac{y}{1} = \frac{z}{0}$ is

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Correct option is C

Use formula, cosθ=|a1a2+b1b2+c1c2|a 12+b 12+c 12a 22+b 22+c 22

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The angle between the lines x−12=y−21=z+32 and x1=y1=z0 is

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The angle between the lines $\frac{x - 1}{2} = \frac{y - 2}{1} = \frac{z + 3}{2}$ and $\frac{x}{1} = \frac{y}{1} = \frac{z}{0}$ is