28) RAQ = _

\(\angle RAQ = \angle ZAQ - \angle ZAR\)

\(\angle ZAR\) = 180° - \(\angle ZAB\) - \(\angle BAR\) = 180° - 110° = 70°

\(\angle ZAQ\) = 180° - \(\angle ZAB\) - \(\angle BAQ\) = 180° - 90° = 90°

\(\angle RAQ\) = 90° - 70° = 20°

Ответ: 20°