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Sagot :

☺ Salut ☺

ABC est un triangle rectangle en A tel que AB = 6 cm et AC = 8 cm.Calculer BC.

• Puisque ABC est un triangle rectangle alors (BC)² = (AB)² + (AC)².

• Calculons BC :

[tex]{(BC)}^{2} = {(6\:cm)}^{2} + {(8\:cm)}^{2}[/tex]

[tex]{(BC)}^{2} = 36\:{cm}^{2} + 64\:{cm}^{2}[/tex]

[tex]{(BC)}^{2} = 100\:{cm}^{2}[/tex]

[tex] \sqrt{{(BC)}^{2}} = \sqrt{100\:{cm}^{2}}[/tex]

[tex] \boxed{\boxed{ \overbrace{ \underbrace{BC = 10\:cm}}}}[/tex]

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