1989 - WAEC Mathematics Past Questions and Answers - page 5
41
In the diagram above, O is the center of the circle. If ∠POR = 114o, calculate ∠PQR
A
123o
B
118.5o
C
117o
D
114o
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42
The angle of depression of a point on the ground from the top of a building is 20.3o. If the foot of the building is 40m, calculate the height of the building, correct to one decimal place
A
37.5m
B
28.1m
C
27.8m
D
14.8m
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43
Solve for x: (x2 + 2x + 1) = 25
A
-6, -4
B
6, -4
C
6, 4
D
-6, 4
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44
Given that logp = 2 logx + 3logq, which of the following expresses p in terms of x and q?
A
p = 5xq
B
p = 6xq
C
p = x2 + q3
D
p = 2x + 3q
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45
sinθ = 1/2 and cosθ = -√3/2, what is the value of θ?
A
30 0
B
60 0
C
90 o
D
120 o
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46
What is the probability that 3 customers waiting in a bank will be served in the sequence of their arrival at the bank
A
1/6
B
1/3
C
1/2
D
2/3
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47
In the diagram, O is the center of the circle, If ∠POQ = 80o and ∠PRQ = 5x, find the value of x.
A
4o
B
8o
C
16o
D
20o
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48
In an A.P the first term is 2, and the sum of the 1st and the 6th term is 161/2. What is the 4th term
A
12
B
91/2
C
8
D
7
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