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°
，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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