In ΔABC, if the orthocenter is (1,2) and the circumcenter is (0,0), then centroid of ΔABC is
A
(1/2,2/3)
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B
(1/3,2/3)
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C
(2/3,1)
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D
none of these
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Solution
The correct option is B(1/3,2/3) If(x1,y1)istheorthocentre,(x2,y2)bethecircumcentre.Centroid=2x2+x13,2y2+y13usingtheaboveformulabytaking(1,2)as(x1,y1)and(0,0)as(x2,y2)centroid=13,23