Question

Question #a3e64

Answer 1

20.45 meter

Explanation:

Call h the height of the observation deck, above the top of mountain.
The angle t that observes this height h -->
`t = 15^@9 - 15^@7 = 0^@2` --> tan t = 0.003526
The distance d from the observer to the tower:
d = 5,800 m,
the height is given by the formula:
`tan t = h/d` --> h = (tan t)(d)
h = (0.003526)(5,800) = 20.45 m