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Q.

The number of triangles which are obtuse and which have the points (8,9), (8, 16) and (20, 25) as the feet of perpendiculars drawn from the vertices on the opposite sides is

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a

0

b

1

c

2

d

3

answer is D.

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Detailed Solution

There exist exactly four triangles ABC,APC,APB and BPC satisfying the given conditions of which three triangles will   be obtuse angle.
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