To determine the distance to a VOR station, what calculation is used?

The calculation used to determine the distance to a VOR (VHF Omnidirectional Range) station involves understanding how speed, time, and direction (bearing) relate to distance. The correct option highlights the relationship between the true airspeed (TAS), time spent changing bearings, and the degrees of bearing change.

When you are navigating and determine the change in your heading as you approach a VOR station, the TAS gives you the speed at which you are traveling. If you note the change in the bearing to the VOR station over a specific time frame, you can multiply your TAS by the time spent changing the heading to figure out how far you’ve traveled during that time.

This calculation essentially allows you to derive the distance to the station because the distance covered can be approximated by both your speed and the time at which your heading changes. Since the correct answer encapsulates this by including both the components of time and the degrees of bearing change, it reflects an effective method to determine the distance to the VOR station based on your flight path.

The other options do not effectively incorporate both the change in heading and the impact of that on the distance you are traveling toward the VOR station, which is why they do not provide the