The direction ratios of the line which is perpendicular to the lines with direction ratios -1, 2, 2 and 0, 2,

Question 118 of 145

-1, 2, 2

(a)

-2, -1, -2

(b)

2, 1, 2

(c)

2, -1, -2

(d)

-2, 1, -2

Maharashtra MsbshseMaharashtra HSC (MSBSHSE) Board 2019MCQ· 1mImportance★★★★★

81% · 118/145 Questions

You're viewing a preview — the full solution, concept, methods & PYQ mapping are locked.

The line perpendicular to two given lines has direction ratios given by the cross product of their direction-ratio vectors.

DR's: $\vec d_1 = (-1,2,2)$ , $\vec d_2=(0,2,1)$ .

$\vec d_1\times\vec d_2 = \begin{vmatrix} \hat i & \hat j & \hat k \\ -1 & 2 & 2 \\ 0 & 2 & 1 \end{vmatrix}$

…

Q.The direction ratios of the line which is perpendicular to the lines with direction ratios $-1, 2, 2$ and $0, 2, 1$ are ________.