Answer:
Step-by-step explanation:
From the given right angle triangle,
The hypotenuse of the right angle triangle is the unknown side
With m∠40 as the reference angle,
The adjacent side of the right angle triangle is 20.
The opposite side of the right angle triangle is x.
To determine x, we would apply
the tangent trigonometric ratio. It is expressed as
Tan θ = opposite side/adjacent side. Therefore,
Tan 40 = x/20
x = 20Tan 40 = 20 × 0.839
x = 16.8 to the nearest tenth.
