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Question

In triangle ABC, base BC and area of triangle are fixed. Locus of the centroid of triangle ABC is a straight line that is:

A
parallel to side BC
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B
right bisector of side BC
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C
right angle of BC
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D
inclined at an angle sin1(ΔBC)
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Solution

The correct option is A parallel to side BC
Δ=12h(BC)h=2ΔBCh is fixed
As h and BC are fixed ,A moves in a straight line parallel to BC to keep h constant
As A moves in a straight line ,G also moves in a straight line parallel to BC( BC is constant)

994531_1086838_ans_a9da59b69cc94fa682a170fc9b662db5.png

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