a: \(AC=\sqrt{10^2-6^2}=8\left(cm\right)\)
\(AH=\dfrac{6\cdot8}{10}=4.8\left(cm\right)\)
\(HB=\dfrac{6^2}{10}=3.6\left(cm\right)\)
HC=10-3,6=6,4cm
b: \(HM=\dfrac{4.8\cdot3.6}{6}=4.8\cdot0.6=2.88\left(cm\right)\)
\(HN=\dfrac{HA\cdot HC}{AC}=\dfrac{4.8\cdot6.4}{8}=4.8\cdot0.8=3.84\left(cm\right)\)
c: \(AB\cdot AM=AH^2\)
\(AC\cdot AN=AH^2\)
Do đó: \(AB\cdot AM=AC\cdot AN\)