- #1

Rapier

- 87

- 0

## Homework Statement

Find the distance from Atlanta to San Francisco if Atlanta is @ 33.75°N and 84.40°W and San Francisco is @ 37.78°N and 122.42°W. Explain your strategy.

## Homework Equations

cos phi = z/rho

cos theta = x/r

r = rho*sin phi

## The Attempt at a Solution

I believe that latitudes are my thetas and the longitudes are my phis. I've tried to come up with equations that allow me to solve for a single variable but I keep having too many unknowns.

Someone suggested use the difference in theta (and phi) in my equations but even then I am still stuck on how to convert these angle measures into spherical coords.

I am looking for a way to get started, and any help would be greatly appreciated.