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If overline(x)andoverline(y) are unit v...

If `overline(x)andoverline(y)` are unit vectors and `overline(x)*overline(y)=0` then ........

A

`|overline(x)+overline(y)|=sqrt(3)`

B

`|overline(x)+overline(y)|=sqrt(2)`

C

`|overline(x)+overline(y)|=1`

D

`|overline(x)+overline(y)|=2`

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