3. (Refer to Figure 21.) What course should be selected on the omnibearing selector (OBS) to make a direct flight from Mercer County Regional Airport (area 3) to the Minot VORTAC (area 1) with a TO indication?

Use Fig. 21 to find the course (omnibearing selector with a «TO» indication) from Mercer County Regional Airport (lower left corner) to the Minot VORTAC (right of 1). Note the compass rose (based on magnetic courses) that indicates the Minot VORTAC. A straight line from Mercer to Minot Airport coincides the compass rose at 179°. Since the route is north TO Minot, not south from Minot, compute the reciprocal direction as 359° (179° + 180°).