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[" 25.In an equilateral "Delta ABC,D" is...

[" 25.In an equilateral "Delta ABC,D" is a point on side "BC" such that "BD=(1)/(3)BC" .Prove that "9(AD)^(2)=7(AB)^(2)],[" OR "]

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In an equilateral triangle ABC,D is a point on side BC such that BD=(1)/(3)BC Prove that 9AD^(2)=7AB^(2)

In an equilateral triangle ABC, D is a point on side BC such that BD= (1)/(3)BC . Prove that 9AD^(2)= 7AB^(2) .

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