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∠xを求めたいです。

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✨ Best Answer ✨

∠AOO´=180°-x
左の円と右の円の交点をCとすると
△AOCはOA=OCだから
∠OAC=∠OCAの二等辺三角形で
∠OAC=90-42=48°だから
180°-x+48°×2=180°
x=48×2=96°

ゲスト

ありがとうございます。

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