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If O is the origin and P = (1, -2, 1) an...

If O is the origin and P = (1, -2, 1) and `OP bot OQ`, then Q =

A

`(4, 3, 2)`

B

`(3, 2, 4)`

C

`(2, 3, 4)`

D

`(1, -2, 3)`

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DIPTI PUBLICATION ( AP EAMET)-DIRECTION COSINES AND DIRECTION RATIOS-EXERCISE 1
  1. If the d.r.'s of two lines are (x, 3, 5) and (2, -1, 2) and if the ang...

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  2. If the line joining the points (2, 3, 4), (0, 1, 2) is perpendicular t...

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  3. If O is the origin and P = (1, -2, 1) and OP bot OQ, then Q =

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  4. If the d.c. 's (l, m, n) of two lines are connected by the relations l...

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  5. If the d.c.'s (l, m, n) of two lines are connected by the relations l+...

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  6. If the d.c.'s (l, m,n) of two lines are connected by the relations 7l^...

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  7. If the d.c.'s (l, m, n) of two lines are connected by the relations l+...

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  8. If the d.c.'s (l, m, n) of two lines are connected by the relations 3l...

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  9. The direction ratios of two lines are given by a+b+c=0, 2ab+2ac-bc=0. ...

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  10. If the d.c.'s (l, m, n) of two lines are connected by the relations l+...

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  11. If the direction ratios of two lines are given by l+m+n=0, mn-2n+lm=0,...

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  12. If the direction rations of two lines are given by 3lm-4ln+mn = 0 and ...

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  13. The acute angle between the two lines whose direction ratios are given...

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  14. Find the angle between the lines whose d.c's are related by l + m + n ...

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  15. The angle between the lines whose direction cosines satisfy the equati...

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  16. If the direction cosines of two lines are given by l+m+n=0 " and " l^(...

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  17. If the d.c.'s (l, m, n) of two lines are connected by the relations 2l...

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  18. P.T the smaller angle theta between any two diagonals of a cube is giv...

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  19. The angle between a diagonal of a cube and the diagonal of a face of t...

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  20. If a line makes angles alpha, beta, lambda,delta with the four diagon...

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