Question 5
- A bird perches on the top of a slanted tree of length 12.8 m. If the bird is 10 m vertically above the ground,
(i) illustrate the information in a diagram;
(ii) find, correct to the nearest degree, the angle of depression of the foot of the tree
from the bird
- The table shows the distribution of marks obtained by some students in a test.
Marks |
1 |
2 |
3 |
4 |
5 |
6 |
7 |
8 |
9 |
Number of students |
11 |
12 |
10 |
17 |
16 |
15 |
14 |
13 |
12 |
If a student is selected at random from the class, find the probability that the student
obtained at most 7 marks.
Observation
The Chief Examiner reported that some of the candidates who attempted part (a) of this question did not quite understand the question as a result could not draw the correct diagram. The part (b) of this question was also not well attempted as some candidates could not interpret the idea at most 7 marks.
In part (a), they were expected to draw the diagram as shown:
