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1. 已知 ,下列選項何者為方程式 的根?(A) sin 20° (B) sin 40° (C)sin 60° (D) sin 80° (E) sin100°
問題詳情
1. 已知
,下列選項何者為方程式
的根?
(A) sin 20°
(B) sin 40°
(C)sin 60°
(D) sin 80°
(E) sin100°
參考答案
答案:A,B
難度:非常困難0
統計:A(0),B(0),C(0),D(0),E(0)
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