Angles of Elevation & Depression

Topic Content:

Angle of Elevation:

This is the angle between normal eye level (horizontal line) and the line through which an object is above the observer’s eye.

Angle of Depression:

This is the angle between the horizontal line and the line through which the object is below the observer’s eye can be seen.

The angles of elevation and depression are mostly applicable in solving problems involving heights and distances.

Example 2.1.1:

A man is at a point 18 m away from the foot of a tree. From that point, the angle of elevation of the top of the tree is 29°. Calculate the height of the tree.

Solution

The angle of elevation from the foot of the man to