Question

A rope is used to tie a boat to a dock. The angle of depression from the boat to the ocean floor directly beneath the dock is 40 degrees. The boat is 25.17 feet above the ocean floor.
What is the length of the rope between the boat and the dock?

Answer 1

x = 25.17/sin(40) x sin90

x = 39.16ft

39.16ft/sin90 = x/sin50

x = 30 ft