\[\angle ABK = 128{^\circ};\]
\[\angle CBD = 164{^\circ};\]
\[\angle ABC = 180{^\circ} - развернутый.\]
\[\angle ABD = \angle ABC - \angle DBC =\]
\[= 180{^\circ} - 164{^\circ} = 16{^\circ}.\]
\[\angle KBC = \angle ABC - \angle ABK =\]
\[= 180{^\circ} - 128{^\circ} = 52{^\circ}.\]
\[\angle DBK =\]
\[= \angle ABC - \angle ABD - \angle KBC =\]
\[= 180{^\circ} - 16{^\circ} - 52{^\circ} = 112{^\circ}.\]
\[Ответ:\ \angle DBK = 112{^\circ}.\]