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Co - ordinate Geometry 3D Geometry

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If the given planes ax + by + cz +d = 0 and a'x + b'y + c'z +d' = 0 be mutually perpendicular, then

A. a/a' = b/b' = c/c'

B. a/a' + b/b' + c/c'=0

C. aa' + bb' + cc' + dd'=0

D. aa' + bb' + cc' =0

E. None of the above

View Answer

Correct choice: D

Explanation:

None

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Eamcet Mathematics Co - ordinate Geometry 3D Geometry

Eamcet Mathematics
Co - ordinate Geometry 3D Geometry