Question

In the diagram, O is the center of the circle, ∠MON = 80^o, ∠LMO = 10^o and ∠LNO = 15^o. Calculate the value of x

Answer 1

The correct answer is C. 55^o

Reflex + â OML + â ONL + â NLM = 360

280^o + 10^o + 15^o + x = 360^o => 305^o + x^o = 360^o

x = 360^o - 305^o = 55^o