The unit vector which is orthogonal to t...

The unit vector which is orthogonal to the vector `3hati+2hatj+6hatk` and is coplanar with the vectors `2hati+hatj+hatk` and `hati-hatj+hatk` is (A) `(2hati-6hatj+hatk)/sqrt(41)` (B) `(2hati-3hatj)/sqrt(3)` (C) `3hatj-hatk)/sqrt(10)` (D) `(4hati+3hatj-3hatk)/sqrt(34)`

`(2hati-6hatj+hatk)/(sqrt(41))`

`(2hati-3hatj)/(sqrt(13))`

`(3hatj-hatk)/(sqrt(10))`

`(4hati+3hatj-3hatk)/(sqrt(34))`.

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