JAMB Mathematics 2008 Objective — Question 30

Question 30 of 50 from the Joint Admissions and Matriculation Board (JAMB) Mathematics 2008 Objective paper, with the correct answer and a full explanation.

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

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

Explanation

It means the inscribed triangle (formed by the radii and the chord) is an equilateral triangle. Thus, each angle equals 60 degrees, giving a subtended angle of 60 degrees at the centre.

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