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CBSE Class 11-commerce Answered

Question no 22
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Asked by Payal | 22 Feb, 2018, 12:16: PM
answered-by-expert Expert Answer
let AB=3x-2y+6=0
AC=4x+5y-20=0
let H be orthocentre
steps
1.solve AB and AC to find A(_,_)
2.slope of AB=3/2 so slope of altitude CH perpendicular to it  is -2/3 
3. equation of CH can be found slope=-2/3 and point (1,1) on it
4.slope of BH is 5/4 perpendicular to AC and point (1,1) lies on BH so find its equation
5.solve BH and AB to get B
6.solve CH and AC to get C 
7.find eqn of BC double point form
Answered by Arun | 22 Feb, 2018, 05:23: PM

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