Teaching DSSSB TGT Mock Test 2025 Mathematics Three Dimensional Geometry Direction ratios and Direction cosines
If a line makes angle 90°, 60° and 30° with the positive direction of x, y and z axis respectively. Find its direction cosines?
1
0, 1/2 and √3 / 2
2
1, 1/2 and √3 / 2
3
1, 1/2 and √3
4
None of these