Once range and bearing have been calculated, what do we use to plot a line of position?

To plot a line of position after calculating range and bearing, the correct approach is to draw a straight line at right angles to the celestial body's azimuth. This method utilizes the concept that the line of position reflects the direction from the observer to the celestial body, with the azimuth representing the angle from true north to the line of sight to that body. By plotting the line at right angles to the azimuth, navigators can accurately represent their positional information on a chart.

The other options do not align with standard navigation practices. For instance, plotting a curve following the body's trajectory might suggest a path rather than a specific line of position, which is not accurate for determining the navigator's exact location relative to the celestial body. A triangle representing distance could refer to an abstract method of calculation but does not effectively convey a navigational line on a chart. Lastly, drawing a dotted line at any angle to the azimuth does not maintain the necessary relationship for proper plotting, as the line must be perpendicular to the azimuth for it to accurately indicate the direction to the celestial body.