A kite on a 160-foot string is caught on a pole. When the full length of the string is stretched in a straight line to the ground, it touches the ground a distance of 50 feet from the bottom of the pole. The string forms an angle of _______° with the ground when it is stretched like this.

Respuesta :

Answer:

String form an angle of 18.2° with the ground.

Step-by-step explanation:

Given: Length of the string of a kite = 160 ft.

           Kite stuck on pole at height of = 50 ft.

We need to find: Measure of angle formed by string of kite with ground.

Attached figure showing the given situation.

let α be the required angle.

In ΔABC,

using trigonometric ratio,

[tex]sin\,\aplha=\frac{AB}{AC}[/tex]

[tex]sin\,\aplha=\frac{50}{160}[/tex]

[tex]sin\,\aplha=\frac{5}{16}[/tex]

[tex]sin\,\aplha=0.3125[/tex]

[tex]\aplha=sin^{-1}(0.3125)[/tex]

[tex]\alpha=18.20995686428301[/tex]

[tex]\alpha=18.21[/tex]

Therefore, String form an angle of 18.2° with the ground.

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