# Longitude and Latitude II

Welcome to class!

In today’s class, we will be talking more about longitude and latitude. Enjoy the class!

### Longitude and Latitude II

#### Calculation of distance between two points

##### 1. On the Longitude

The distance along the Great Circles:

The radius of the earth is approximately 6400 KM. the distance between any two points on P and Q on a great circle is given by the formula

where o is the angular difference between points P and Q.

R is the radius of the earth.

##### 2. On the Latitude:

The distance along Parallel of Latitudes:

The distance between any two points X and Y along a parallel of latitude is given by the formula

• ##### Time or Speed of Aircraft:

Time or speed of aircraft can be calculated after obtaining the distance by using the formulae of distances along longitude and latitude

We hope you enjoyed the class.

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