Answer:
9sin(36) = 5.29 (approx)
Step-by-step explanation:
Remember SOH,CAH,TOA
When doing trig, you need to look at what you have like it's a tool. Often time if you had other information you can solve for whatever.
In this case you've got 36 degrees. Opposite to that is x and the hypotenuse is 9.
Sin is equal to Opposite over Hypotenuse
Sin(36) = x/9
x = 9sin(36) (put that into a calculator)
x = 5.29
Also are you cheating in university right now lol?