Respuesta :

Answer:

[tex]9.46[/tex]

Step-by-step explanation:

[tex]\sin \theta=\frac{opposite}{hypotenuse}\\\\ \sin 72=\frac{9}{x}\\\\x=\frac{9}{\sin 72}\\\\x=\frac{9}{0.951057}\\\\x=9.4632\approx 9.46[/tex]