(I have no idea what to do with this. if someone could please just give me directions to solve it that would be great. I'm not suppose to use a calculator so the final answer should look unfinished)
You are in a boat sailing directly to a light house when you see the light at the top. You record an angle of elevation at 40degrees. After sailing 200 feet, you note that the angle of elevation is now 60degrees. Find the hight of the light house.

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