1.

DeltaABC be an equilateral triangle whose orthocentre is the origin 'O'. If bar(OA)=bar(a), bar(OB)=bar(b)" then "bar(OC) is

Answer»

`BAR(a)+bar(B)`
`(bar(a)+bar(b))/2`
`-(bar(a)+bar(b))`
`-2(bar(a)+bar(b))`

ANSWER :C


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