Question

Prove that orthocentre of a ∆ ABC with A (x1, y1), B(x2, y2), C (x3, y3) is given by

Answer 1

Please help

This is what I could do

Answer 2

@shubhamsrg

@UnkleRhaukus
@satellite73
@amistre64

Please help

It is very urgent

Answer 3

It is just a single step that I couldn't find out

Answer 4

maybe find eqns of any 2 lines,,say AD and FC,,then find O..
but seems very complex at first site :|

Answer 5

I even tried that but couldn't get anything

That looked more , more and more complex

Answer 6

i dont see any simpler way,,lol..
i think that shouldnt be that difficult,,symmetry is there (onlky little though)

Answer 7

Its ok

Answer 8

@apoorvk

Answer 9

No easier method I guess :|

Answer 10

Its OK

Answer 11

@Mertsj