Answer: The length of flagpole is 24 feet.
Step-by-step explanation:
Since we have given that
Length of shadow =40 feet
Angle of elevation to the sun = [tex]31\textdegree[/tex]
In ΔABC,
We can apply "trigonometric rules ",
[tex]\tan\theta=\frac{AB}{BC}\\\\\tan31\textdegree=\frac{AB}{40}\\\\0.6\times 40=AB\\\\24\ feet=AB[/tex]
Hence, the length of flagpole is 24 feet.
