In simple words, the cosines of the angles made by a directed line segment with the coordinate axes are called as the direction cosines of that line. For more details use the links given below:
Click here → Study Material of Direction Cosines and Direction Ratios
Exercises of Direction Cosines and Direction Ratios – Class 12th R.D. Sharma Solutions |
| Direction Cosines and Direction Ratios Exercise 27.1 |