Lesson 8, Topic 2
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Back Bearing

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Topic Content:

• Back Bearing
• Step by Step Solutions with Diagrams for Each Step

If you are given the bearing of A from B, then the bearing of B from A is called the back bearing

Example 8.2.1:

If the bearing of A from B is 120Âº, what is the bearing of B from A?

Solution

Â A from B means “start from B”.

First, let’s draw the cardinal points of location B

The bearing of A from B is 120Âº. Place the compass at the centre of B, start from the north line and rotate clockwise through an angle of 120Âº (90Âº + 30Âº). We are now pointing S 60Âº E in the direction of location A.

The orange line in the diagram below represents the 120Âº angle from B to A. The line AB represents the distance between B and A.

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