4963.32 is the answer your looking for man.
1/9 * 54/1 = 54/9.
So she is walking 6mph.
Answer:
![\theta=38.7\degree](https://tex.z-dn.net/?f=%5Ctheta%3D38.7%5Cdegree)
Step-by-step explanation:
We want to solve
given that
is acute.
We take tangent inverse of both sides to get:
![\theta=\tan^{-1}(\frac{4}{5})](https://tex.z-dn.net/?f=%5Ctheta%3D%5Ctan%5E%7B-1%7D%28%5Cfrac%7B4%7D%7B5%7D%29)
Now set your calculator to degree mode and evaluate
to obtain:
![\theta=38.6598\degree](https://tex.z-dn.net/?f=%5Ctheta%3D38.6598%5Cdegree)
To one decimal place, we have;
![\theta=38.7\degree](https://tex.z-dn.net/?f=%5Ctheta%3D38.7%5Cdegree)