Answer:
11.1
Step-by-step explanation:
Here, we want to get EF
To do this, we use the appropriate trigonometric ratio
we have the side facing the right angle as the hypotenuse
the measure of this is 18
The side facing the angle 38 is EF
This is the opposite to angle 38
The ratio of the opposite to the hypotenuse is equal the sine
sin 38 = EF/18
EF = 18 sin 38
EF = 11.1
