2012 · Q50
From the top of a cliff 200 m high, the angles of depression of the top and bottom of a tower are observed to be 30 degrees and 45 degrees respectively. What is the height of the tower?
Elementary MathematicsTrigonometry
- A400 m
- B400*sqrt(3) m
- C400/sqrt(3) m
- DNone of the above
Explanation
The tower height is 200 - 200/sqrt(3) = 84.5 m, which matches none of the listed options.