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The distance of the point (2,1,-1) from ...

The distance of the point (2,1,-1) from the plane `x-2y+4z=9` is (A) `sqrt(13)/21` (B) `13/21` (C) `13/sqrt(21)` (D) `sqrt(13/21)`

A

`(sqrt13)/21`

B

`13/12`

C

`13/(sqrt21)`

D

`sqrt(13/21)`

Text Solution

Verified by Experts

The correct Answer is:
C
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MAHAVEER PUBLICATION-CO-ORDINATE GEOMETRY OF THREE DIMENSIONS-QUESTION BANK
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