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  • Need solution for RD Sharma Maths Class 12 Chapter 26 Directions Cosines and Direction Ratios Exercise Very Short Answer Question, question 4.

Need solution for RD Sharma Maths Class 12 Chapter 26 Directions Cosines and Direction Ratios Exercise Very Short Answer Question, question 4.

Answers (1)

Answer:

(0,0,1)

Hint:

Cosines of z-axis.

Given:

Cosines of z-axis.

Solution:

The z-axis makes the angle 90^{\circ}, 90^{\circ} and \; 0^{\circ} with x, y and z-axis

∴direction cosine of z-axis 

= \cos 90^{\circ}, \cos 90^{\circ} and \; \cos 0^{\circ}

=0, 0,1

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