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Centroid of triangle formed by feet of p...

Centroid of triangle formed by feet of perpendicular from (-3,-6,-9) on coordinate axes is

A

(-1,-2,-3)

B

(1,2,3)

C

(1,-2,-3)

D

(1,-2,3)

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The correct Answer is:
A
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AAKASH SERIES-3D-COORDINATE SYSTEM-PRACTICE EXERCISE
  1. The coplanar points (3,2,5) , (2,2,1),(-1,4,1 ),(0,5,5) form a

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  2. In DeltaABC, A(4,5,6), B(3,2,1), C(5,4,3). If p,q,r are lengths of the...

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  3. Centroid of triangle formed by feet of perpendicular from (-3,-6,-9) o...

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  4. If the origin is the centroid of the tetrahedron for which (2,-1,3),(-...

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  5. In the tetrahedrom ABCD, A=(1,2,-3) and G=(-3,4,5) is cntroid of tetra...

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  6. The circumcentre of the triangle formed by the points (1,2,3), (2,3,1)...

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  7. Statement-I : The coordinates of a point equidistant from the four poi...

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  8. The incentre of the triangle formed by (0,0,0),(3,0,0),(0,4,0) is

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  9. The centroid of the triangle formed by the points (2,-1,1),(1,-3,-5),(...

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  10. A (3,4,5), C(-1,6,1) are the vetrices of a triangle then Statement-I...

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  11. The distance between the circumcentre and the orthocentre of the trian...

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  12. If the Internal bisector of angleAOB where 0=(0,0,0), A =(3,4,12), B=(...

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  13. Statement-I : If (2,3,5),(3,5,2) and (5,2,3) are the vertices of a tri...

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  14. Locus of x^(2)+y^(2)+z^(2)=0 is

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  15. The locus of a point for which the sum the squares of the ditance from...

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  16. Show that the point whose distance from Y-axis in thrice its distance ...

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  17. ABC is a right angled triangle right angled at A. If B(2,0,2) and C(0,...

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  18. The locus of the point P such that PA^(2)+PB^(2)=10 where A=(2,3,4), B...

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  19. The locus of the point P such that PA^2+PB^2=2PC^2 where A=(1,3,2),B=(...

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  20. If the locus of a point which is equidistant form (2,3,-1) and (-3,4,-...

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