geometry
posted by erika .
The angle of depression from the top of a lighthouse to a boat in the water is 30°. If the lighthouse is 89 feet tall how far is the boat from the lighthouse to the nearest foot?
Answers available in ...
10Take this time to do your
best on this question.
A)
45 feet Eliminate Reactivate
B)
51 feet Eliminate Reactivate
C)
63 feet Eliminate Reactivate
D)
154 feet Eliminate Reactivate

tan 30° = 89/x
x = 89/tan30°
= ...
I have no idea what the rest of your post means, or how it ties in with your question.
D does contain the number 154 ft, which is the correct answer.