E
Editor
Sep 18, 2022
The angle of depression of a point A on the ground from the top of the tower is $30^{\circ}$, then the angle of elevation of the top of the tower at the point A is
Difficulty: Easy
A:
$60^{\circ}$
B:
$40^{\circ}$
C:
$41^{\circ}$
D:
$30^{\circ}$
ID: 63273db9ca83163ac3a10adf