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If the projection of a line segment on t...

If the projection of a line segment on the ` x, y ` and z -axes in 3 dimensional space are 2,3 and 6 respectively, then the length of the line segment is

A

12

B

7

C

9

D

6

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The correct Answer is:
B
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AAKASH SERIES-REVISION EXERCISE -STRAIGHT LINES
  1. The angle between the lines whose direction cosines satisfy the equati...

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  2. If the lines L1 and L2 in space are defined by L1 = {x=sqrt lambda y+...

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  3. If the projection of a line segment on the x, y and z -axes in 3 dim...

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  4. Let ABC be a triangle with vertices at points A( 2,3,5 ), B ( -1,3,2)...

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  5. The equation of a plane through the line of intersection of the planes...

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  6. Equation of a plane which passes through the point of intersection of ...

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  7. Let A (2,3,5) , B ( -1,3,2) and C( lambda ,5, mu ) be the vertices ...

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  8. A line in 3 dimensional space makes an angle theta (0 lt theta le pi...

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  9. The plane containing the line (x-1)/(1) =(y-2)/( 2) =(z-3)/(3) and ...

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  10. A symmetrical form of the line of intersection of the planes x= ay +b...

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  11. If the distance between the planes 4x -2y - 4z +1 =0 and 4x -2y -4z +...

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  12. Equation of the line of shortest distance between the lines (x)/(1) =...

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  13. If the angle theline 2(x+1)=y=z+4 and the plane 2x-y+sqrt(lambda)z+4=0...

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  14. Shortest distance between z-axis and the line (x-2)/(3) =(y-5)/(2) =(...

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  15. Let L be the line x-4 =y-2 =(z-7)/(2) and P be the plane 2x - 4y +z =...

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  16. The angle between the lines 2x =3y =-z and -6x =y =-4z is

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  17. The reflection point of the point (0, 3,-2) " on the line " (1-x)/(...

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  18. A variable plane passes through a fixed point (1,-2,3) and meets the ...

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  19. The distance of the point (1,0,2) from the point of intersection of t...

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  20. The number of distinct real values of lamda for which the lines (x-1)/...

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