1.

ABCDEF is a regular hexagon. O is centre and P.V. of A, B are bar(i)-bar(j)+2bar(k), 2bar(i)+bar(j)+bar(k)" then "bar(BC)=

Answer»

`-BAR(i)+bar(J)+2BAR(K)`
`-bar(i)+bar(j)-2bar(k)`
`-bar(i)+bar(j)+bar(k)`
`-bar(i)+bar(j)`

ANSWER :A


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