Mathematics
Junior High
Solved
求め方を教えて欲しいです
右の図のように三角形ABCが
あり、点Dは∠BACの二等分線と辺
BCとの交点である｡
∠ABC-41",∠ADC=77" のとき,
∠ACBの大きさを求めなさい。
B
41°
D
77°
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