\(AB< AC\Rightarrow BH< CH\)
Áp dụng hệ thức lượng: \(\left\{{}\begin{matrix}BH.CH=AH^2\\BH+CH=BC\end{matrix}\right.\)
\(\Rightarrow\left\{{}\begin{matrix}BH+CH=5\\BH.CH=\frac{144}{25}\end{matrix}\right.\) \(\Rightarrow\left\{{}\begin{matrix}BH=\frac{9}{5}\\CH=\frac{16}{5}\end{matrix}\right.\)
\(AB=\sqrt{BH.BC}=3\) ; \(CH=\sqrt{BC^2-AB^2}=4\)