Mia is standing 210 yd from a radio tower.
The angle of elevation from where she is standing on the ground to the top of the tower is 11°.
How tall is the radio tower?
Round the final answer to the nearest tenth. Enter in blank space.

____ yd?

Respuesta :

height = tan(11) x 210

height = 40.81 yards

 rounded to nearest tenth = 40.8 yards

Solution:

The height of the radio tower is 40.8 yd.

Explanation:

Let us draw a diagram for the given situation. In the attached diagram AB is the radio tower and Mia is standing at point C.

The angle of elevation is 11°. Hence, angle C is 11°.

Let the height of the tower is h.

In triangle ABC, we have

[tex]\tan \theta = \frac{AB}{BC} \\\\\tan 11^{\circ}=\frac{h}{210} \\\\h=210\tan 11^{\circ}\\\\h=40.8[/tex]

Therefore, the height of the radio tower is 40.8 yd.

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