Question

The accompanying diagram shows a ramp 16 feet long leaning against a

wall at a construction site. If the ramp forms an angle of 18° with the
ground, how high above the ground, to the nearest tenth, is the top of
the ramp?
16 ft
18°
PREVIOUS ANSWER
20.5.

Answer 1

Approximately 4.9ft

Explanation:

For this we're going to use trigonometry (specifically SOH CAH TOA)
Because we're finding the opposite and we have the hypotenuse, we will use the sin function (make sure your calculator is in degrees!!!)

sin=O/H

Plugging in:
sin(18)=O/16

Solving:
16sin(18)=O, or approximately 4.9ft.