JEE Type

Geometry Level 4

Let H be the orthocentre of A B C \triangle ABC for A ( 0 , 0 ) A (0,0) , B ( 8 , 0 ) B(8,0) , C ( 4 , 4 3 ) C (4,4\sqrt { 3 } )

If G 1 , G 2 , G 3 , G_1, G_2, G_3, \ldots are centroids of triangles A H B , A G 1 B , A G 2 B \triangle AHB, \triangle AG_1 B, \triangle A G_2 B \ldots respectively.

Find the value of lim n k = 1 n Area ( Δ A G k B ) \displaystyle{\lim _{ n\rightarrow \infty }{ \sum _{ k=1 }^{ n }{ \text{Area}(\Delta A{ G }_{ k }B) } } } .

16 3 16\sqrt { 3 } 4 3 3 \cfrac { 4\sqrt { 3 } }{ 3 } 16 3 3 \cfrac { 16\sqrt { 3 } }{ 3 } 8 3 3 \cfrac { 8\sqrt { 3 } }{ 3 } 8 3 8\sqrt { 3 } 4 3 4\sqrt { 3 }

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1 solution

Rohit Ner
Mar 9, 2015

Here triangle ABC is equilateral triangle.

Nicely done

Deepanshu Gupta - 6 years, 3 months ago

Did the same , but mistake in calculating!

Niranjan Khanderia - 6 years, 3 months ago

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