A woman standing on a cliff is watching a motorboat through a telescope as the boat approaches the shoreline directly below her. If the telescope is 250 feet above the water level and if the boat is approaching at 20 feet per second, at what rate is the angle of the telescope changing when the boat is 250 feet from the shore?

Answer rating: 100% (QA)

tan x250 ddt tan ddt x250 sec2 ddt 1250dxdt ddt ... View the full answer