已知:
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[*]ABCD 為圓內接四邊形。
[*]AB 為直徑。
[*]三角形 PCD 與四邊形 ABCD 的面積比為 1:8
[/list]
求: sinθ=?
- Target Group (Age)
- 15 – 18
- Language
- Chinese Traditional / 繁體中文
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