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Let vec a = i+2j+k, vec b = i-j+k, vec c...

Let `vec a = i+2j+k, vec b = i-j+k, vec c = i+j-k`. A vector coplanar to a `vec a` and `vec b` has a projection along `vec c` of magnitude `1/sqrt3`, then the vector is

A

`3i+j-3k`

B

`4i+j-4k`

C

`i_j-2k`

D

`4i-j+4k`

Text Solution

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The correct Answer is:
D
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