Straight Line and Pair of Straight Lines 1 Question 68
68. Two vertices of a triangle are and . If the orthocentre of the triangle is the origin, find the coordinates of the third vertex.
(1978, 3M)
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Answer:
Correct Answer: 68.
Solution:
- Let the coordinates of third vertex be
.
Since,
Also,
On solving Eqs. (i) and (ii), we get