The coordinates of the vertices of a right angled triangle are P(3, 4), Q(7, 4) and R(3, 8), the right angle being at P. The coordinates of the orthocentre of 
are
-
(3, 4)
-
(7, 4)
-
(3, 8)
-
(3, 8)
A.
(3, 4)
We know that orthocentre of a right angle triangle is the vertex of a right angle. In the adjoining figure, RP and PQ are the two perpendicular vertices and PS is the third perpendicular vertex.
P is the orthocentre of
.
Hence, the required coordinate will be (3, 4).
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