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  • Explain solution RD Sharma Class 12 Chapter 26 Direction Cosines and Direction Ratios Exercise Very Short Answer Question, question 18 Maths.

Explain solution RD Sharma Class 12 Chapter 26 Direction Cosines and Direction Ratios Exercise Very Short Answer Question, question 18 Maths.

Answers (1)

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

\frac{x-a}{0}=\frac{y-b}{0}=\frac{z-0}{1}

\therefore Direction cosines 0,0,1

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