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=(  )A.-                                           B.-C...

习题库2.13W

问题详情:

=(  )A.-                                           B.-C...=(  )

A.-=(  )A.-                                           B.-C... 第2张                                             B.-=(  )A.-                                           B.-C... 第3张

C.=(  )A.-                                           B.-C... 第4张                                               D.=(  )A.-                                           B.-C... 第5张

【回答】

A 

知识点:三角恒等变换

题型:选择题

标签:A.