Question

how we can proove that in " equilateral triangle ABC, D is point on BC such that BD= 1/3 BC .TO PROVE 9(AD) 'SQUERED' = 7(AB)'SQUARED' { by using pythogoras theorem}

Answer 1

Remember the Pythagoras theorem means A squared + B squared = C squared

Answer 2

but i am not getting proof of in that question