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This question is from 3d geometry I want it`s answer urgently

This question is from 3d geometry I want it`s answer urgently

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Grade:12

2 Answers

Yash Chourasiya
askIITians Faculty 256 Points
3 years ago
Hello Student

We have,l, m, n and l + δl, m + δm, n + δn,as direction cosines of a variable line of two different positions.

For further solution please see the attachment.

643-599_1.PNG

I hope this answer will help you.
Vikas TU
14149 Points
3 years ago
643-599_1.PNG
Dear student 
Please refer the clear image of this solution 
Feel free to ask querry 
We will happy to help you.
Good Luck 
Cheers 

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