Lesson 28 Graph of the rotating arm
Worksheet 1 Sine of angle
1. Find the sine for there angles from 0 to 90. Write them in there table.
| Angle (o) | 0 | 10 | 20 | 30 | 40 | 50 | 60 | 70 | 80 | 90 |
| Sine |
2. a) Plot the graph of the sine ratio for the angle 0 – 90.
b) Describe how the sine ratio changes with the angle.
3. Find the sine ratios for the second quarter turn. Plot them on the same graph.
| Angle (o) | 100 | 110 | 120 | 130 | 140 | 150 | 160 | 170 | 180 |
| Sine |
4. Describe how the sine ratio changes with the angle 90 – 180.
5. Find the sine ratio for the third and fourth quarter turns. Plot them on the same graph.
| Angle (o) | 190 | 200 | 210 | 220 | 230 | 240 | 250 | 260 | 270 |
| Sine |
| Angle (o) | 280 | 290 | 300 | 310 | 320 | 330 | 340 | 350 | 360 |
| Sine |