Answer:
I.dk but you need to focus on something school related for a bit
Step-by-step explanation:
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(or 0.5) divided by 8 is 0.0625
First you must set up the equation.

Then, divide 0.5 by 8
0.0625
The tangent function gives the ratio of vertical to horizontal distance in this case.
.. vertical distance = (horizontal distance)*tan(angle of depression)
.. = (40 m)*tan(50°)
.. vertical distance ≈ 47.7 m