1.

The P.V.'s of the vertices of a triangle are 2bar(i)+3bar(j)+4bar(k), 4bar(i)+6bar(j)+3bar(k), 3bar(i)+2bar(j)+3bar(k) P.V. of its orthocentre is

Answer»

`2BAR(i)-3BAR(j)+4bar(k)`
`2bar(i)+3bar(j)-4bar(k)`
`2bar(i)+3bar(j)+4bar(k)`
`-2bar(i)+3bar(j)+4bar(k)`

ANSWER :C


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