=                                                      ...

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问题详情:

=                                                      ...=                                                             (    )

A.=                                                      ... 第2张                B.=                                                      ... 第3张        C.=                                                      ... 第4张               D.=                                                      ... 第5张


舒中高一统考理数 第2页 (共4页)

 

【回答】

C

知识点:三角恒等变换

题型:选择题

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