Teaching BPSC 4.0 बिहार उच्च माध्यमिक शिक्षक भर्ती (PGT) Mock Test Mathematics Three Dimensional Geometry Direction ratios and Direction cosines
The Direction Ratios of the line whose direction cosines are given by the equations
3l + m + 5n = 0, 6mn - 2nl + 5lm = 0:1
- 3n, n, n
2
- n, - 2n, n and - 2n, n, n
3
n, 3n, - 3n
4
n, - 2n, - 3n
5
None of the above/More than one of the above.