Question

The lines $\frac{x+1}{1}=\frac{y-1}{2}=\frac{z-2}{-1},\frac{x-1}{2}=\frac{y}{1}=\frac{z+1}{4}$ are

• A. parallel lines
• B. intersecting lines
• C. perpendicular lines
• D. skew lines

Answer 1

The correct option is C perpendicular lines

$\because$ (1)(2) + (2)(1) + (– 1)(4) = 0
so Lines are perpendicular