[" (viii) "tan AD perp BC" and "BD=(1)/(3)CD" .Prove that "],[2CA^(2)=2AB^(2)+BC^(2)]

In Figure 3,AD perp BC and BD=(1)/(3)CD Prove that 2CA^(2)=2AB^(2)+BC^(2)

In Figure 3, AD _|_BC and BD=1/3CD . Prove that 2 CA^2 = 2 AB^2 + BC^2 .

In Delta ABC seg AD perp seg BC,DB=3CD Prove that 2AB^(2)=2AC^(2)+BC^(2)

In DeltaABC , seg AD bot seg BC , DB=3CD . Prove that 2AB^(2)=2AC^(2)+BC^(2) .

In DeltaABC , seg AD bot seg BC , DB=3CD . Prove that 2AB^(2)=2AC^(2)+BC^(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) .

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

In figure,/_B<90^(@) and AD perp BC .Prove that AC^(2)=AB^(2)+BC^(2)-2BC.BD