(a)[1]
Find the size of $\angle ABD$.
(b)[1]
Find the size of $\angle AOD$.
(c)[1]
Find the size of $\angle DAB$.
Mathematics 4024 · O Level · Circle theorems I
Circle theorems I — practice question
On the circle with centre $O$, the points $A$, $B$, $C$ and $D$ are all on the circumference. Also, $\angle ACB = 69^\circ$ and $\angle DCA = 34^\circ$.