1.

If 4bar(i)+7bar(j)+8bar(k), 2bar(i)+3bar(j)+4bar(k), 2bar(i)+5bar(j)+7bar(k) are the P.V.'s of the vertices A, B, C of a DeltaABC. The P.V. of the point where the bisector of angleA meets BC is

Answer»

`2/3(-6bar(i)-8BAR(J)-6bar(K))`
`2/3(6bar(i)+8bar(j)+6bar(k))`
`1/3(6bar(i)+13bar(j)+18bar(k))`
`4bar(i)+7bar(j)+8bar(k)`

ANSWER :C


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