alleryA vertical mast's base and tip are at elevations 45°,60° from level ground 10 m horizontally away. Mast length?
A10(√3−1) m
B10 m
C10√3 m
D10(√3+1) m
Answer & Solution
Correct answer: A. 10(√3−1) m
The tip and base heights are 10√3 m and 10 m, whose difference is 10(√3 − 1) m.
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