Answer:
XY = 23.3 ft
Step-by-step explanation:
It helps if you can draw yourself a picture.
You are given right triangle with the adjacent side of the 9° angle and you are looking for the hypotenuse.
The cos of an angle = adjacent side/hypotnuse
Let h = XY
Then cos 9 = 23/h
h cos 9 = 23
h = 23/cos 9
h = 23.3 ft.
