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Find the direction cosines of the lines, connected by the relations: `l+m+n=0` and `2l m+2ln-m n=0.`

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RD SHARMA ENGLISH-DIRECTION COSINES AND DIRECTION RATIOS-All Questions
  1. Find the angle between the lines whose direction ratios are proport...

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  2. If the coordinates of the points A ,\ B ,\ C ,\ D\ b e\ (1,\ 2,\ 3),\ ...

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  3. Find the direction cosines of the lines, connected by the relations...

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  4. Find the angle between the lines whose direction cosine are given by...

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  5. Find the angle between the lines whose direction cosine are given by...

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  6. Find the angle between the lines whose direction cosine are given by...

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  7. Find the angle between the lines whose direction cosine are given by...

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  8. Define direction cosines of a directed line.

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  9. What are the direction cosines of Y-axis?

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  10. Find the direction cosines of x, y and z-axis.

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  11. What are the direction cosines of Z-axis?

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  12. Write the distance of the point (7, -2, 3) from "X Y"," Y Z and X Z"...

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  13. Write the ratio in which YZ plane divides the segment joining" P"(-2...

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  14. A line makes an angle of 60^0 with each of X-axis and Y-axis. Find ...

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  15. If a line makes angle "alpha","beta\ and\ gamma" with the coordinat...

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  16. Write the inclination of a line with Z-axis, if its direction ratio...

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  17. Find the angel between the vectors with direction ratios proportion...

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  18. Write the distance of the point P(2,3,5) from the xy-plane.

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  19. Write the coordinates the reflections of point (3,\ 5) in X and Y -...

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  20. Find the distance of the point (2, 3, 4) from the x- axis.

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