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If the planes 3x-2y+2z+17=0 and 4x+3y-k...

If the planes `3x-2y+2z+17=0 and 4x+3y-kz=25` are mutually perpendicular , then k=

A

3

B

`-3`

C

9

D

`-6`

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The correct Answer is:
A
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TARGET PUBLICATION-PLANE-COMPETATIVE THINKING
  1. If the planes x+2y+kz=0 and 2x+y-2z=0, are at right angles, then the v...

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  2. The value of k for which the planes 3x-6y-2z=7 and 2x+y-kz=5 areperpen...

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  3. If the planes 3x-2y+2z+17=0 and 4x+3y-kz=25 are mutually perpendicul...

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  4. The equation of the plane through (4,4,0) and perpendicular to the pla...

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  5. Angle between the line vecr=(2hati-hatj+hatk)+lamda(-hati+hatj+hatk) a...

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  6. The sine of the angle between the straight line (x-2)/3=(y-3)/4=(z-4)/...

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  7. If the angle theta between the line (x+1)/(1)=(y-1)/(2)=(z-2)/(2) and ...

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  8. The plane 2x-3y+6z-11=0 makes an angle sin^(-1)(alpha) with X-axis. Th...

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  9. If the angle batween the line x=(y-1)/(2)=(z-3)/(lambda) and the plane...

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  10. The value of lambda for which the straight line (x-lambda)/(3)=(y-1)/(...

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  11. The line (x-2)/3 = (y-3)/4 = (z-4)/5 is parallel to the plane

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  12. The condition that the line (x-x1)/l=(y-y1)/m=(z-z1)/n lies in the pla...

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  13. Value of k such that the line (x-4)/1 = (y-2)/1 =(z-k)/2 lies in th...

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  14. If the line, (x-3)/2=(y+2)/(-1)=(z+4)/3 lies in the place, l x+m y-z=9...

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  15. The condition that the line (x-x1)/l=(y-y1)/m=(z-z1)/n lies in the pla...

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  16. If P (3,2,6) is a point in space and Q be a point on the line vecr = (...

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  17. The equation of plane containing intersecting lines (x+3)/(3)=(y)/(1)=...

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  18. The lines (x-2)/(1)=(y-3)/(1)=(z-4)/(-k) and (x-1)/(k)=(y-4)/(2)=(z-5)...

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  19. If planes x-cy-bz=0,cx-y+az=0 and bx+ay-z=0 pass through a straight li...

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  20. IF for a plane the intercepts on the coordinate axes are 8,4,4 then th...

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