Question

The distance between Airports A&B is approximately how many miles?

Answer 1

We can find the value of x, using the law of cosines:

`\begin{gathered} a^2=b^2+c^2-2bc\cos (\alpha) \\ _{\text{ }}where\colon \\ a=x \\ b=320 \\ c=112 \\ \alpha=130 \end{gathered}`

Therefore:

`x=(320)^2+112^2-2(320)(112)\cos (130)`
`x\approx401`

Answer:

401 mi