Circle T has diameter [tex] \overline{OS}[/tex] , radii [tex] \overline{TM}[/tex] and [tex] \overline{TN}[/tex] , and chords [tex] \overline{OQ}[/tex] and [tex] \overline{QS}[/tex] If m\angle MTN = m\angle SQO, determine the measure of [tex]\overset{\frown}{MN}[/tex] .