Teaching EMRS PGT Mock Test 2023 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°