In Figure, ABC is a triangle in which ∠ABC>90∘ and AD⊥CB produce – InterviewSolution

1.	In Figure, ABC is a triangle in which ∠ABC>90∘ and AD⊥CB produced.Prove that AC2=AB2+BC2+2BC.DB
Answer» In Figure, $A B C$ is a triangle in which $∠ A B C > 90^{\circ}$ and $A D ⊥ C B$ produced. Prove that $A C^{2} = A B^{2} + B C^{2} + 2 B C . D B$

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