Answer:
The angle of elevation is [tex]39\°[/tex]
Step-by-step explanation:
see the attached figure to better understand the problem
Let
x-----> the angle of elevation of the sun
we know that
In the right triangle ABC
[tex]tan(x)=\frac{BC}{AC}[/tex]
we have
[tex]BC=40\ ft[/tex]
[tex]AC=50\ ft[/tex]
substitute
[tex]tan(x)=\frac{40}{50}[/tex]
[tex]x=arctan(\frac{40}{50})=39\°[/tex]
