For this case we have that by definition of trigonometric relations that, the sine of an angle is equal to the opposite leg to the angle on the hypotenuse. So:
[tex]Sin (36) = \frac {5} {x}[/tex]
Clearing x:
[tex]x = \frac {5} {sin (36)}\\x =\frac {5} {0.58778525}\\x = 8.517887564
[/tex]
Rounding off we have to:
[tex]x = 8.51[/tex]
Answer:
Option D
