(a)[1]
Find the value of $x$.
(b)[1]
Find the value of $y$.
(c)[1]
Find the value of $z$.
(d)[1]
Find the value of $t$.
Mathematics 4024 · O Level · Circle theorems I
Circle theorems I — practice question
The diagram depicts a circle, with centre $O$, passing through $A,B,C$ and $D$. The tangents drawn at $A$ and $B$ intersect at $T$. $\angle ATB=62^\circ$ and $\angle DAB=53^\circ$.