Mathematics
Senior High
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この解答合ってますか?間違っていれば正解をお願いします。
78 下の図において,点0は△ABCの外心である。 x を求めよ。
(1)
B
33°
A
27°
(2)
B
A
35
/21゜
35°
x
C
33+27=60
X=60°
2(X+21 +35) = 180
2x + 42 +70=180
27=180-112
2x=68
X = 34°
++
189'
-112
68
10
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