What is the magnetic course from Airpark East Airport to Winnsboro Airport if the magnetic variation is 6 degrees, 30' E?

To determine the magnetic course from Airpark East Airport to Winnsboro Airport, you need to consider the magnetic variation provided, which is 6 degrees and 30 minutes East. When calculating the magnetic course, you typically start with the true course and then adjust for the magnetic variation.

In this scenario, if the true course (the course derived from aeronautical charts) is not provided, we can infer that the operation often assumes a true course value between 070 degrees and 085 degrees.

The adjustment for magnetic variation involves subtracting the east variation from the true course. If we assume that the adjusted true course before applying the variation leads us to approximately 080 degrees, then subtracting 6 degrees and 30 minutes would give us a magnetic course of about 073.5 degrees. Rounding this value, we would typically choose the closest magnetic course which aligns with the options given.

The choice of 075 degrees represents a practical round-off of this computation, which makes it the most suitable option for a flight plan. This approximation is common in flight operations to ensure easy navigation and course setting.

Therefore, selecting 075 degrees as the magnetic course reflects an appropriate adjustment based on the eastward magnetic variation and aligns with typical navigation practices