i dont know how to do this one :(((

Answer:
[tex]y=1.8[/tex]
Step-by-step explanation:
You can compare the equation to slope intercept form where b = mid-line
[tex]f(x)=5.6 sin(1.2x-2.3)+1.8[/tex]
[tex]y=mx+b[/tex]
5.6 ⇒ m
[tex]sin(1.2x-2.3)[/tex] ⇒ x
1.8 ⇒ b
~Hope this helps!~