9
QuizMultiple Choice

Dot Product and Work — Unit test

Question 9 • Precalculus

From where Kiana is standing, she must look up at a 50° angle to see the top of a building. If she backs up 50 feet, she will need to look up at a 40° angle to see the top of the same building. Approximately how tall is the building?

Question illustration
Answer
A
119.0 ft.
B
141.8 ft.
C
185.1 ft.
D
220.6 ft.
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