alleryEyes 1.5 m high, vertical tower 31.5 m; level walk straight away from base: tan elevation 0.75→0.5. Walk?
A40 m
B10 m
C30 m
D20 m
Answer & Solution
Correct answer: D. 20 m
The height above the eyes is 30 m, giving distances 40 m and 60 m and a 20 m walk.
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