Page 57 - steps 4b 02.pdf

RM64

II Co-ordinates II II II II II II II II 4b:26

The star * is 11 points
QOo
from 0 at an angle of 50°
80°
12 to the horizontal axis.
This is written as: (11, 50°).
11

10
The distance is always
Q written first, then the angle.

8

7

6

5

4

3

2

2 3 4 5 6 7 8 Q 10 11 12

OJ Mark and label the position of these points on the grid.
A (5, 10°) B (8, 70°) C (6, 40°) 0 (2, 50°) E (7, 30°)
F (q, 20°) G (12, 60°) H (3, 80°) I (10, 0°) J (4, qOO)

[!J Mark in red these points on the grid.
(6, 10°) (6, 80°) (6, 50°) (6, 20°) (6, 60°) (6, qOO)
What have all the red points got in common?

~ Mark in blue these points on the grid.
(5, 20°) (8, 20°) (12, 20°) (3, 20°) (7, 20°) (10, 20°)
What have all the blue points got in common?

Using polar co-ordinates in the first quadrant.
Name
Date

© 1994 HarperColiins Publishers STEPS 4b