Article: Angles of Elevation and Depression

Angles of Elevation and Depression


Angles of elevation and depression are angles that are formed with the horizontal. If the line of sight is upward from the horizontal, the angle is an angle of elevation; if the line of sight is downward from the horizontal, the angle is an angle of depression. These types of angles and some trigonometry can be used to indirectly calculate heights of objects or distances between points. Alternatively, if the heights or distances are known, the angles can be determined.

Angles of Elevation

Finding a Flagpole's Height. Suppose that the height of a flagpole must be determined. The flagpole forms a right angle with level ground. Suppose the flagpole ...



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