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JSS2: MATHEMATICS - 3RD TERM

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  1. Scale Drawing | Week 1
    3 Topics
    |
    1 Quiz
  2. Angles of Elevation & Depression | Week 2
    3 Topics
    |
    1 Quiz
  3. Pythagoras’ Theorem I | Week 3
    3 Topics
    |
    1 Quiz
  4. Pythagoras’ Theorem II | Week 4
    2 Topics
    |
    1 Quiz
  5. Area and Volume of Cones and Cylinders | Week 5
    3 Topics
    |
    1 Quiz
  6. Cones | Week 6
    3 Topics
    |
    1 Quiz
  7. Bearings and Distances I | Week 7
    2 Topics
    |
    1 Quiz
  8. Bearings and Distances II | Week 8
    2 Topics
    |
    1 Quiz
  9. Presentation of Data | Week 9
    6 Topics
    |
    1 Quiz
  10. Probability | Week 10
    6 Topics
    |
    1 Quiz



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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 120º, what is the bearing of B from A? 

Solution 

 A from B means “start from B”.

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

Screenshot 2024 04 26 at 09.37.19

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

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

Screenshot 2024 04 26 at 10.09.10

 

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