IIT JEE , AIEEE Forum - Mathematics , Vectors

kghedriu

Hey the answer is orthocentre option (2)

check that first of all, in all options u hav triangle ABC.....

so, keep it as fixed....

now, try for the positions of D...

the given equations imply that AD.BC=0 and BD.AC=0 (. means doy product)

so, AD and BC are perpendicular and so are BD and AC.....

for a given triangle ABC, this is possible only with the orthocentre.....

hope m clear...

thank u...

Goutham Harsha