WAEC Mathematics 2020 Question 44

Question 44

Circle Theorems

In the diagram, O is the centre of the circle. If ∠NLM = 74°, ∠LMN = 39° and ∠LOM = x, find the value of x.

Diagram for this question
  1. A.134°
  2. B.126°
  3. C.113°
  4. D.106°
Show the answer and explanation

Answer: A (134°)

Explanation

∠LNM = 180° − 74° − 39° = 67°. The angle at the centre is twice that: x = 134°.