i need help , i dont undersand this

Question

Jacksonville, Florida, and Charlotte, North Carolina, lie approximately on the same meridian. Jacksonville has a latitude of 30.3°N, and Charlotte has a latitude of 35.2°N. Find the distance between these two cities. (The radius of the earth is 3960 mi. Round your answer to the nearest mile.)

 

Answer 1

The two cities lie on same meridian of the circle.

Find the circumference of the circle.

Radius of the earth is .

The Jacksonville has a latitude of .

The Charlotte has a latitude of .

Latitude angle is the angle measured from equator to the city.

So the angle between two cities is the difference between two latitude angles.

Difference of the latitude: .

Find the distance between the two cities.

Meridian distance on the sphere: .

Distance between two cities is 338.7 miles.