Answer:

Step-by-step explanation:
Given that,
The height of the tower, h = 40 m
The angle of elevation is 30°
We need to find the distance between the tower and the point. Let the distance is x. Using trigonometry,

So, the distance between the tower and the point is equal to
.
Just substitute it into the gradient formula which is: y2 - y1 / x2 - x1. So 2-3/2-9 = -1/-7 = 1/7
Hello there.
The sequence is being divided by ten
51/10= 5.1
5.1/10 = 0.51
0.51/10 = 0.051,
and so on.
You can also reverse the following sequence and multiply it by ten.
Good luck to you! This problem was a mental workout. XD