Answer:
Step-by-step explanation:
Since it is given that Distance between a boat that is away from a point perpendicular to the shore line = 20 feet
Angle of elevation that is formed between the closest point to the boat and the person = 60°
Now, we need to find the distance between the person and the boat.
Using the trigonometric ratios,
[tex]sin60^{{\circ}}=\frac{AB}{AC}[/tex]
[tex]\frac{\sqrt{3}}{2}=\frac{20}{H}[/tex]
[tex]\frac{40}{\sqrt{3}}=H[/tex]
[tex]H=\frac{40}{1.7}[/tex]
[tex]H=23.0 feet[/tex]
Thus, the distance between the person and the boat is 23 feet.