A ship's sonar locates wreckage at a 15 degrees angle of depression below the water, as pictured. A diver is lowered 50 meters to the ocean floor.

In the final seconds before the plane landed in the Hudson, the pilot slowed the plane.  While the plane slowed it climbed from 210 ft at 3:29.58 to 370 ft at 3:30.17. An elevation change of 160 ft over a distance of 2000 ft. What was the angle of ascent for the plane (e) as it slowed? Round your answer to the nearest hundredth (second decimal place).

A rock is throw horizontally off a cliff.  After 3.0 seconds the velocity of the rock has an angle of 10° below the horizontal.  Determine the magnitude of the initial velocity of the rock.

An observer located 3 km from a rocket launch site sees a rocket at anangle of elevation of 38°. How high is the rocket at that moment?