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BECE Mathematics 2023 Objective — Question 47

Question 47 of 120 from the Basic Education Certificate Examination (Junior WAEC) (BECE) Mathematics 2023 Objective paper, with the correct answer and a full explanation.

Calculate ∣AD∣.

Diagram for question 47

A. 20√2 m
B. 20√3 mCorrect
C. 20√5 m
D. 26 m
E. 30 m

Explanation

In triangle ABD, sin 30° = AB/AD. AD = 10√3 ÷ ½ = 20√3 m.

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