What’s the correct answer for this?

Answer:
the distance of the rope between boat and dock is 30
Step-by-step explanation:
to get the distance between the rope and the dock we use tan 40 because we have the opposite as 25.17ft
tan 40 = opposite/adjacent
0.839 = 25.17/a
cross multiply
0.839a= 25.17
a = 25.17/0.839 = 30 ft