Mathematics
Senior High
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【2】と【3】番の問題がわかりません、途中式込みで優しい方詳しく説明お願いします！
下の図において,直線 AT は点Aで円Oに接している。x とyを求め
5
練習
18
よ。ただし,(2) では AC BC である。
C
B
56°
72°0
B
B
*0 y
50°
67)
A
T
A
T
D
A
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