Пусть $$∠BOK = x$$, тогда $$∠KOC = x + 12°$$.
$$∠BOC = ∠BOK + ∠KOC$$
$$160° = x + x + 12°$$
$$2x = 160° - 12°$$
$$2x = 148°$$
$$x = 74°$$
$$∠BOK = 74°$$
$$∠KOC = 74° + 12° = 86°$$
Ответ: ∠BOK = 74°, ∠KOC = 86°.