It can be any object that is above or below the horizontal from the perspective of a viewer.
The angle between an object and the horizon is referred to as the "angle of elevation" when the object is above the horizontal line, and the "angle of depression" when the object is below it. These angles are commonly used in trigonometry and surveying to determine heights and distances. The angle of elevation is measured from the observer's eye level upward to the object, while the angle of depression is measured downward from the observer's eye level to the object.
It is the alternate angle to the angle of elevation
The angle below horizontal that an observer must look to see an object that is lower than the observer. Note: The angle of depression is congruent to the angle of elevation (this assumes the object is close enough to the observer so that the horizontals for the observer and the object are effectively parallel; this would not be the case for an astronaut in orbit around the earth observing an object on the ground).
The angle of elevation is the angle formed between a horizontal line and a line of sight upward to an object, while the angle of depression is the angle formed between a horizontal line and a line of sight downward to an object. When two observers are at different heights, the angle of elevation from one observer to the other is equal to the angle of depression from the second observer to the first. This relationship holds true in a right triangle formed by the line of sight and the horizontal lines, demonstrating that these angles are complementary. Thus, if one angle increases, the other decreases correspondingly when measured from a common horizontal plane.
The angle of elevation is looking at an object above your line of sight.
Angle of elevation is looking upwards to an object and angle of depression is looking downwards to an object
The angle between an object and the horizon is referred to as the "angle of elevation" when the object is above the horizontal line, and the "angle of depression" when the object is below it. These angles are commonly used in trigonometry and surveying to determine heights and distances. The angle of elevation is measured from the observer's eye level upward to the object, while the angle of depression is measured downward from the observer's eye level to the object.
It is the alternate angle to the angle of elevation
A sextant.
The angle below horizontal that an observer must look to see an object that is lower than the observer. Note: The angle of depression is congruent to the angle of elevation (this assumes the object is close enough to the observer so that the horizontals for the observer and the object are effectively parallel; this would not be the case for an astronaut in orbit around the earth observing an object on the ground).
The angle of depression is looking at an object below your line of sight.
The angle of elevation is looking at an object above your line of sight.
you could do a model showing the angle of elevation and angle of depression of a building
Angle of depression is defined as the angle between the horizontal line and the line joining the observer's line of sight to an object below the observer's eye sight. You can be on top of a building and an object is situated on the ground, and the angle between your horizontal line and the object is the angle of depression.
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The angle of depression is looking downwards to an object from the horizontal
angle of depression