a security company installed closed-circuit television cameras at a local bank.

Question

a security company installed closed-circuit television cameras at a local bank. They are mounted on a wall 7.4 feet above a security desk. They are used to view the entrance door 9.3 feet from the desk. Find the angle of depression.

Answer 1

The angle of depression will be the same as the angle from the door to the camera because opposite angles of parallel lines are equal. So

tan(θ) = opposite/adjacent = 7.4/9.3

θ = tan^-1(7.4/9.3)