s. Given two vectors are i- j and i+ 2j ...

s. Given two vectors are `i- j` and `i+ 2j` the unit,vector coplanar with the two vectors and perpendicular to first is

A

`1/sqrt2(hati+hatj)`

B

`1/sqrt5(2hati+hatj)`

C

`pm1/sqrt2(hati+hatj)`

D

None of these

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The correct Answer is:

C

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