Respuesta :
By using trigonometric relations, we will see that the angle of elevation is 64.1°
How to get the angle of elevation?
We can think of this as in a right triangle, where the hypotenuse measures 16ft, and the adjacent cathetus (to the angle we want to get) measures 7ft.
Then we can use the relation:
cos(a) = (adjacent cathetus)/(hypotenuse)
Replacing what we know we get:
cos(a) = 7ft/16ft
Now if we apply the inverse cosine function to both sides, we get:
Acos(cos(a)) = Acos(7/16)
a = Acos(7/16) = 64.1°
So we conclude that the elevation angle of the ladder is 64.1°
If you want to learn more about right triangles, you can read:
https://brainly.com/question/2217700