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Mathematics Past Questions and Answers

Waec Mathematics Questions

Question 1701:

The ratio of the exterior angle to the interior angle of a regular polygon is 1:11. How many sides has the polygon?

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A 30
B 24
C 18
D 12

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Question 1702:

Halima is n years old. Her brother's age is 5 years more than half of her age. How old is her brother?

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A \(\frac{n}{2} + \frac{5}{2}\)
B \(\frac{n}{2}\) - 5
C 5 - \(\frac{n}{2}\)
D \(\frac{n}{2}\) + 5

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Question 1703:

In the diagram MN is a chord of a circle KMN centre O and radius 10cm. If < MON = 140^o, find, correct to the nearest cm, the length of the chord MN.

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A 19cm
B 18cm
C 17cm
D 12cm

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Question 1704:

An object is 6m away from the base of a mast. If the angle of depression of the object from the top of the mast is 50^o, find, correct to 2 decimal places, the height of the mast.

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A 8.60m
B 7.83m
C 7.51m
D 7.15m

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Question 1705:

From the diagram, which of the following is true?

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A M + n + p = 180^o
B M + n = 180^o
C M = p + n
D N = m + p

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