alleryStart learning →An observer 1.5 m tall stands 28.5 m from a chimney and sees its top at 45° elevation. How tall is the chimney?
A27 m
B31.5 m
C30 m
D28.5 m
Answer & Solution
Correct answer: C. 30 m
The part above eye level is 28.5 times tan 45°, which is 28.5 m, and adding the 1.5 m eye height gives 30 m.
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