If your forward heading is 210°, what is the back-bearing?

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Multiple Choice

If your forward heading is 210°, what is the back-bearing?

Back bearing is the direction exactly opposite the forward heading. To get it, you add or subtract 180 degrees and wrap to 0–360. Since the forward heading is 210°, you subtract 180° to get 30°. So the back bearing is 30°. This reflects the opposite direction along the same line. The other numbers don’t fit because they don’t place you opposite the 210° direction. 210° is the forward heading itself, not the opposite, and 60° or 150° aren’t 180° away from 210°.

Back bearing is the direction exactly opposite the forward heading. To get it, you add or subtract 180 degrees and wrap to 0–360. Since the forward heading is 210°, you subtract 180° to get 30°. So the back bearing is 30°. This reflects the opposite direction along the same line.

The other numbers don’t fit because they don’t place you opposite the 210° direction. 210° is the forward heading itself, not the opposite, and 60° or 150° aren’t 180° away from 210°.

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