Teaching HSSC TGT 2023 Mock Test (Latest Pattern) Mathematics Three Dimensional Geometry Direction ratios and Direction cosines
What are the direction ratios of normal to the plane 4x + 2y - 4z + 1 = 0?
1
〈4, 2, 4〉
2
\(\left\langle 2, \frac{1}{2}, -2 \right\rangle\)
3
〈 1, -2, 1 〉
4
\(\rm \left \langle 2 , 1 , -2 \right \rangle\)
5
Not Attempted