Teaching HSSC TGT 2023 Mock Test (Latest Pattern) Mathematics Three Dimensional Geometry Direction ratios and Direction cosines
The angle between the pair of lines with direction ratios (1, 1, 2) and \(\left( {\sqrt 3 - 1, - \sqrt 3 - 1,4} \right)\) is
1
30°
2
45°
3
60°
4
90°
5
Not Attempted