Parallel Sailing - Example 1-1 - Calculating Course and Distance

The problem solved in this video is "Your vessel is to sail from position 49° 54.0’ S by 060° 05.7’ W to position 49° 54.0’ S by 041° 12.9’ E. What is the Course (Cn) and Distance (D) traveled." This problem is like Example 1 in the Parallel Sailing section of Bowditch. We will have to compare Longitude 1 and Longitude 2 to determine DLo and then use the formula for Departure p = DLo cosL