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In an equilateral triangle A B C if A...

In an equilateral triangle `A B C` if `A D_|_B C` , then `5A B^2=4A D^2` (b) `3A B^2=4A D^2` (c) `4A B^2=3A D^2` (d) `2A B^2=3A D^2`

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RD SHARMA-TRIANGLES-All Questions
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