Angle of elevation is the angle between line of sight and the horizontal when the object is above the horizontal line.
The angle of elevation is the angle between the line of sight of an observer below his horizontal line of sight.
State whether the given statement is true or false:
The angle of elevation is the angle between the line of sight of an observer from above and the object below his horizontal line of sight.
The angle of elevation is the angle between the line of sight of an observer and the horizontal, when the object is below the observer's horizontal line of sight.