CIRCLES 1

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