Question

How is 'Angle of depression' defined?

Answer 1

Definition of angle of depression. : theangle formed by the line of sight and the horizontal plane for an object below the horizontal.

Answer 2

Answer:

The angle that the line of sight makes with the horizontal line.  

Step-by-step explanation:

See the attached diagram.

Let us assume that there are two towers AB and CD and B is the top of AB and C is the bottom of CD.

Now, the position of C with respect to point B by the angle of depression x degree, which is measured from the horizontal line BE to the line BC rotated clockwise.

Below the horizontal line, the Angle of depression is measured. (Answer)