Question

Estimate the length of the zip line and round to the nearest tenth of a foot

Answer 1

Let the length of the zip line be z.

Then

`\cos 30^(\circ)=(23.6)/(z)`
`\Rightarrow(\cos 30^(\circ))/(1)=(23.6)/(z)`

Cross-multiplying, we have

`\begin{gathered} z\cos 30^(\circ)=23.6 \\ \Rightarrow z=(23.6)/(\cos 30^(\circ))=27.3ft \end{gathered}`

Hence the Option B is the correct choice