Question 21
In the triangle $ABC$, the bisectors of the angles $\angle BAC$ and $\angle CBA$ intersect at the point $T$. Let $\gamma$ denote the size of the angle $\angle ACB$. What is the size of the angle $\angle ATB$?
(A) $2\gamma$
(B) $180^\circ - \gamma$
(C) $360^\circ - 4\gamma$
(D) $60^\circ + \gamma$
(E) $90^\circ + \frac{\gamma}{2}$
(A) $2\gamma$
(B) $180^\circ - \gamma$
(C) $360^\circ - 4\gamma$
(D) $60^\circ + \gamma$
(E) $90^\circ + \frac{\gamma}{2}$