JAMB Mathematics 2015 Objective — Question 43

Question 43 of 50 from the Joint Admissions and Matriculation Board (JAMB) Mathematics 2015 Objective paper, with the correct answer and a full explanation.

In the diagram, O is the centre of the circle. If ∠TUR is 50°, find the value of ∠TOR.

A. 40°
B. 130°
C. 100°Correct
D. 50°

Explanation

The angle at the centre is twice the angle at the circumference: ∠TOR = 2×50° = 100°.

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