Straight Line and Pair of Straight Lines 1 Question 26

26. Orthocentre of triangle with vertices (0,0),(3,4) and (4,0) is

(2003,2M)

(a) 3,54

(b) (3,12)

(c) 3,34

(d) (3,9)

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Solution:

  1. To find orthocentre of the triangle formed by (0,0)(3,4) and (4,0).

Let H be the orthocentre of OAB

(slope of OP i.e. OH ) (slope of BA ) =1

y0304034=143y=1y=34

Required orthocentre =(3,y)=3,34



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