Transcript A pole 12 meters tall is perpendicular to level ground.

A pole 12 meters tall is perpendicular to level ground. A taut wire that is 20 meters
long extends from the top of the pole to the ground. What is the angle of elevation, to
the nearest degree, from the bottom of the wire to the top of the pole?
(a)
31°
(b)
35°
(c)
37°
(d)
53°
(e)
59°
Correct Answer: C
Explanation:
It is helpful to draw a figure.
Let represent the angle of elevation (the angle between the line of sight and the
horizontal).
You can find
by setting up the equation sin
. To find
you need to find sin
(For the Level 1 Test, make sure your calculator is in degree mode.) To the nearest
degree, the angle of elevation is 37°.