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If O is the origin, O P=3 with direction...

If `O` is the origin, `O P=3` with direction ratios `-1,2,a n d-2,` then find the coordinates of `Pdot`

A

`(1,2,2)`

B

`(-1,2,-2)`

C

`(-3,6,-9)`

D

`(-(1)/(3),(2)/(3),(2)/(3))`

Text Solution

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The correct Answer is:
B
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TARGET PUBLICATION-THREE DIMENSIONAL GEOMETRY -Critical Thinking
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  2. The vector of magnitude 6 which is equally inclined to the co-ordinate...

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  3. If O is the origin, O P=3 with direction ratios -1,2,a n d-2, then fin...

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  4. Line with direction ratios 1, 1, 1 is

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  8. If the points (2,a,-1),(3,4,b)and(1,-2,3) are collinear, the values of...

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  9. If (1,a,1),(3,-1,2)and(1,a^(2),1) are collinear, then the values of a ...

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  10. Points (-2, 4, 7), (3, -6 -8) and (1, -2, -2) are

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  11. If the angle between the lines whose direction cosines are a,(-2)/(3),...

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  12. The acute angle between the lines having direction ratios 5,4,1 and -3...

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  13. Find the angle between the lines whose direction ratios are: 2,-3,4 ...

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  14. Let theta be the angle between the lines AB and AC, where A, B and C a...

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  15. The direction cosines l, m and n of two lines are connected by the rel...

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  16. Find the angle between the line whose direction cosines are given ...

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  17. The direction cosines of a line equally inclined to three mutually per...

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  18. Find the angle between any two diagonals of a cube.

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  19. The diection cosines of two lines are proportional to (2,3,-6) and (3,...

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  20. If the line joining the points (-2,1,-8) and (a, b, c) is parallel to ...

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