JAMB Mathematics 2023 Objective — Question 28

Question 28 of 40 from the Joint Admissions and Matriculation Board (JAMB) Mathematics 2023 Objective paper, with the correct answer and a full explanation.

What is the angle subtended at the centre of a circle by a chord which is equal in length to the radius of the circle?

• A. 90°
• B. 60°Correct
• C. 45°
• D. 30°

Explanation

A chord equal to the radius forms an equilateral triangle with the two radii, so the subtended angle is 60°.

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