(a)[2]
Determine $x$.
(b)[1]
Determine $y$.
(c)[1]
Determine $z$.
Mathematics 4024 · O Level · Circle theorems I
Circle theorems I — practice question
The circle has centre $O$, and the points $A$, $B$, $C$, $D$ and $E$ are on its circumference. $\angle A\hat{O}B = 48^\circ$, $\angle DE\hat{B} = 54^\circ$.