Question: Angle of elevation refers to an angle formed by a horizontal line and a line joining an observer's eye to an object above the

"Angle of elevation" refers to an angle formed by a horizontal line

"Angle of elevation" refers to an angle formed by a horizontal line and a line joining an observer's eye to an object above the horizontal line. A person is standing 15 meters away from a building and watching an outside elevator move down the face of the building. When the angle of elevation is 1 radian it is changing at a rate of 0.2 radians/sec. At this point in time what is the speed of the elevator?

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