In the diagram O is the center of the circle MO... - WAEC Mathematics 2005 Question
In the diagram, O is the center of the circle, ∠MON = 80o, ∠LMO = 10o and ∠LNO = 15o. Calculate the value of x
A
40o
B
50o
C
55o
D
75o
correct option: c
Reflex + ∠OML + ∠ONL + ∠NLM = 360
280o + 10o + 15o + x = 360o => 305o + xo = 360o
x = 360o - 305o = 55o
280o + 10o + 15o + x = 360o => 305o + xo = 360o
x = 360o - 305o = 55o
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