In the figure, 0 is the centre of the circle ABC, < CED = 30o, < EDA = 40o. What is the size of < ABC?
Attached Figure / Diagram
A
70o
B
110o
C
130o
D
125o
E
145o
Verified Correct Answer: D.
Step-by-Step Mathematical Solution
If < CED = 30º, and < EDA = 40º then
Source: WAEC / JAMB / NECO Classroom Archive (Record #32732)