Find the
value of y in the figure below. [Diagram not to scale]
Solution
Angle at the
centre = 2 x (angle at the circumference
= 2 x (y)
=2y
Angle 2y and
8y are opposite angles. They add up to 3600.
Therefore 2y
+ 8y = 3600
10y = 3600
10y = 3600
10 10
y = 360
Hence y = 360
TRY THIS………….
Find the
value of w in the figure below