find the missing side, round to the nearest tenth place

Answer:
8.87
Step-by-step explanation:
The square means "right angle"
[tex] \sin(\alpha ) = \frac{x}{13} \\ \\ \sin(43) = \frac{ x }{13} \\ \\ x = \sin(43) \times 13 \\ x = 8.86597868081 \\ x = 8.87[/tex]