WAEC Mathematics questions: Trigonometry

26 questions with answers and explanations. Tap an option to check yourself.

1. Question 21· Trigonometry· WAEC

   Convert the bearing S 30° E to a three-figure bearing.

   • A150°
   • B030°
   • C210°
   • D120°

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   Explanation and discussion

2. Question 22· Trigonometry· WAEC

   If tan θ = 8/15 and θ is acute, find sin θ.

   • A17/8
   • B15/17
   • C8/15
   • D8/17

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   Explanation and discussion

3. Question 23· Trigonometry· WAEC

   A ladder 10 m long leans against a wall and makes an angle of 60° with the ground. How high up the wall does it reach?

   • A5√3 m
   • B5 m
   • C10√3 m
   • D5√2 m

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4. Question 24· Trigonometry· WAEC

   Evaluate sin 60° × cos 30°.

   • A1/2
   • B3/4
   • C√3/2
   • D1

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5. Question 25· Trigonometry· WAEC

   What is the value of sin 30°?

   • A1/√2
   • B√3/2
   • C1/2
   • D√3

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6. Question 26· Trigonometry· WAEC

   A boy walks 8 km due north and then 6 km due east. How far is he from his starting point?

   • A10 km
   • B14 km
   • C2 km
   • D12 km

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   Explanation and discussion