- ABoth objects are seen at the same angle of depression.
- BThe scooter is seen at an angle of depression greater than 0°, while the bird lies on the horizontal line of sight, so its angle of depression is 0°.
- CThe bird must be seen at an angle of elevation, because it is sitting on a lamp post.
- DThe angle of depression of the scooter is measured from the vertical wall of the building.
Step-by-Step Solution
Angles of depression are always measured from the horizontal line through the observer's eye. The bird sits exactly on that horizontal line, so its angle of depression is 0°, while the scooter is below the line and is seen at a positive angle of depression.
Answer: B) The scooter is seen at an angle of depression greater than 0°, while the bird lies on the horizontal line of sight, so its angle of depression is 0°.