A person is watching a boat from the top of a lighthouse. The boat is approaching the lighthouse directly. When first noticed the angle of depression to the boat is 18°33'. When the boat stops, the angle of depression is 51°33'. The lighthouse is 200 feet tall. How far did the boat travel from when it was first noticed until it stopped? Round your answer to the hundredths place.

Question

anonymous · Answer

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tan(51 33')= 200/base1
base1=  158.802
tan(18 33')=200/base2
base2=596.008
the distance travelled=596.008-158.802
=438m

anonymous · Answer

What is base 1?