Three Dimensional Geometry Question 259

Question: The value of k for which the planes $ 3x-6y-2z=7 $ and $ 2x+y-kz=5 $ are perpendicular to each other, is

[MP PET 1992]

Options:

0

1

2

3

Show Answer

Answer:

Correct Answer: A

Solution:

Planes are perpendicular, if $ 6-6+2k=0\Rightarrow k=-0 $ .

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