Explain solution RD Sharma Class 12 Chapter 26 Direction Cosines and Direction Ratios Exercise Very Short Answer Question, question 18 Maths.
Answer:
0, 0, 1
Hint:
Direction cosines of z-axis is 0,0,1.
Given:
Line parallel z-axis
Solution:
Any line parallel z-axis is
Direction cosines 0,0,1