in the diagram, angle 20º is subtended at the centre of the circle, find the value of x
Attached Figure / Diagram
A
30o
B
50o
C
80o
D
100o
Verified Correct Answer: B.
Step-by-Step Mathematical Solution
2(30 + x) = 360 - 200
60 + 2x = 160
2x = 160 - 60
2x = 100
x = \(\frac{100}{2}\)
x = 50
Source: Myschool Past Questions Archive (Record #36504)