Дано: ∠MOK = 120°; ∠MOD - ∠DOK = 50°
Найти : ∠DOK
∠MOD - ∠DOK = 50° ⇒ ∠MOD = ∠DOK + 50°
∠MOD + ∠DOK = 120°
∠DOK + 50° + ∠DOK = 120°
2∠DOK + 50° = 120°
2∠DOK = 70°
∠DOK = 35°
Дано: ∠MOK = 120°; ∠MOD - ∠DOK = 50°
Найти : ∠DOK
∠MOD - ∠DOK = 50° ⇒ ∠MOD = ∠DOK + 50°
∠MOD + ∠DOK = 120°
∠DOK + 50° + ∠DOK = 120°
2∠DOK + 50° = 120°
2∠DOK = 70°
∠DOK = 35°