Answer:
2800 feet
Explanation:
See the diagram in the attached. Let p be the height of the skier above his starting level.
Using the SOH CAH TOA notation,
p = the opposite side
5600 ft = Hypotenuse side
Therefore,
Sin 30 = p/5600
p = 5600 Sin 30
p = 5600 × 0.5
p = 2800 ft
The skier is 2800 feet high above his starting level.