已知,则                                                   ...

来源:国语帮 1.63W

问题详情:

已知已知,则                                                   ...,则已知,则                                                   ... 第2张                                                               (    )

       A.已知,则                                                   ... 第3张             B.已知,则                                                   ... 第4张         C.已知,则                                                   ... 第5张          D.已知,则                                                   ... 第6张

【回答】

D

知识点:三角恒等变换

题型:选择题

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