問題詳情
(E) 已知 A, B 兩點的極座標分別為 A[6, 150◦], B[2, 210◦], 若
中點為 C, 則點 C 的直角坐標為
參考答案
答案：D
難度：適中0.432624
統計：A(11),B(13),C(29),D(61),E(0)
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