Answer:
The measure of angle C is [tex]30\°[/tex]
The draw in the attached figure
Step-by-step explanation:
see the attached figure to better understand the problem
we know that
In the right triangle ABC
The sine of angle C is equal to divide the opposite side to angle C by the hypotenuse
[tex]sin(C)=\frac{AB}{AC}[/tex]
substitute the values
[tex]sin(C)=\frac{4.5}{9}[/tex]
[tex]C=arcsin(\frac{4.5}{9})=30\°[/tex]