Understanding Bearings in Navigation

This video tutorial explains the concept of bearings, which are special angles measured clockwise from the north arrow and expressed in three figures. Through examples, the video demonstrates how to calculate bearings between different points, using concepts like parallel lines and angles in a circle. The tutorial emphasizes that diagrams are not to scale and highlights the importance of understanding corresponding angles and angles on a straight line.

What is the unique feature of bearings compared to regular angles?

• They are measured counterclockwise.

• They are measured from the south.

• They are always measured from the north and clockwise.

• They are measured in radians.

Why do bearings need to be expressed in three figures?

• To ensure accuracy in navigation.

• To distinguish them from other angles.

• To make them easier to read.

• To maintain a standard format.

If the bearing of B from A is 80°, how should it be written?

• 008°

• 080°

• 08°

• 80°

When finding the bearing of A from B, which angle property is useful?

• Angles on a straight line add up to 180°.

• Angles in a triangle add up to 180°.

• Corresponding angles on parallel lines are equal.

• Angles in a circle add up to 360°.

What is the bearing of A from B if the bearing of B from A is 80°?

• 180°

• 260°

• 280°

• 360°

In the example of finding the bearing of D from C, what is the initial angle given?

• 60°

• 70°

• 80°

• 90°

How do you calculate the bearing of D from C if the angle is 70°?

• Add 70° to 360°.

• Subtract 70° from 360°.

• Add 70° to 180°.

• Subtract 70° from 180°.

What is the bearing of C from D if the angle is 70°?

• 290°

• 270°

• 230°

• 250°

In the example of finding the bearing of B from A, what is the given bearing?

• 70°

• 60°

• 80°

• 90°

What is the bearing of A from B if the bearing of B from A is 60°?

• 120°

• 300°

• 180°

• 240°