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Q.

A pole stands vertically inside a triangular park ABC. If the angle of elevation of the top of pole from each corner of park is same, then in  ΔleABC,  foot of pole is at the

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a

Centroid

b

Incentre

c

Circumcentre

d

Orthocentre

answer is A.

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Detailed Solution

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Let OL be the pole and angle of elevation of top of pole at each of A, B, C be α 
OLOA=tanαOA=OLcotα,OB=OLcotα,OC=OLcotα
OA=OB=OC
 O is circumcentre
 

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