Question

 

Giúp mìh câu b với ạ 

 

Answer 1

b: \(AC^2-HC^2=AH^2\)

\(AB^2-BH^2=AH^2\)

Do đó: \(AC^2-HC^2=AB^2-HB^2\)

hay \(AC^2+HB^2=AB^2+HC^2\)

Answer 2

b, Ta có \(AC^2-HC^2=AH^2;AB^2-HB^2=AH^2\left(pytago\right)\)

Do đó \(AC^2-CH^2=AB^2-HB^2\)

\(\Rightarrow AC^2+HB^2=AB^2+HC^2\)