1. C. Vectors and Bearings Students are expected to:
1) Determine the accuracy and precision of a measurement.
2) Solve problems involving measurement using bearings vectors.

2. WHAT IS A VECTOR? It describes the motion of an object.
A Vector comprises of
Direction
Magnitude (Size)
We will consider :
Column Vectors

3. Column Vectors (4, 2) Vector a NOTE! Label is in BOLD.
When handwritten,
draw a wavy line
under the label
i.e. a
Vector a
2 up
4 RIGHT
(4, 2)

4. Column Vectors
Vector b b
( -3, 2 )
2 up
3 LEFT
COLUMN Vector?

5. Column Vectors
Vector u n
( -4, -2 )
2 down
4 LEFT
COLUMN Vector?

6. Describing vectors: a b c d

7. Alternative LabellingF B D E G C A H

8. Generalization Vectors has both LENGTH and DIRECTION.

9. What is BEARINGS?
It is the angle of direction clockwise from north.

10. Bearing

11. e. g. The bearing of R from P is 220 and R is due west of Q
e.g. The bearing of R from P is 220 and R is due west of Q. Mark the position of R on the diagram.
Solution: P x Q x

12. e. g. The bearing of R from P is 220 and R is due west of Q
e.g. The bearing of R from P is 220 and R is due west of Q. Mark the position of R on the diagram.
Solution: P x . Q x

13. e. g. The bearing of R from P is 220 and R is due west of Q
e.g. The bearing of R from P is 220 and R is due west of Q. Mark the position of R on the diagram.
Solution: P
220 x . Q x
If you only have a semicircular protractor, you need to
subtract 180 from 220 and measure from south.

14. e. g. The bearing of R from P is 220 and R is due west of Q
e.g. The bearing of R from P is 220 and R is due west of Q. Mark the position of R on the diagram.
Solution: P x
40 . Q x
If you only have a semicircular protractor, you need to
subtract 180 from 220 and measure from south.

15. e. g. The bearing of R from P is 220 and R is due west of Q
e.g. The bearing of R from P is 220 and R is due west of Q. Mark the position of R on the diagram.
Solution: P
220 x . R Q x

16. Practice Exercises - Classwork

23. Homework: 1) Research about Pythagorean Theorem and its proof.
2) Answer the following questions:
Check Your Understanding
# 14, 15, 16 on pages 218.