Respuesta :
Answer:
B.14 m
Step-by-step explanation:
We are given that
Height of tree=12 m
[tex]\theta=40^{\circ}[/tex]
We have to find the distance between the spotlight and the base of tree.
In triangle ABC
AB=12 m
[tex]tan\theta=\frac{perpendicular\;side}{base}[/tex]
Using the formula
[tex]tan 40=\frac{AB}{BC}=\frac{12}{BC}[/tex]
[tex]BC=\frac{12}{tan 40}=14.3\approx 14 m[/tex]
Hence, option B is true.
