The medians AD and BE of the triangle with vertices A(0. b), B(0, 0) and C(a, 0) are mutually perpendicular if
A
b=√2a
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B
a=√2b
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C
b=−√2a
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D
a=−√2b
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Solution
The correct options are Ca=√2b Da=−√2b FindoutthecentroidGoftheΔABCbyusingG=(x1+x2+x33,y1+y2+y33)ThenthemediansareAG(orAE)&BG(0rBE)andtheyare⊥eachother.∴mAG×mBG=−1