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若角 http://picflow.koolearn.com/upload/papers/20140824/20140824055454282310.pnghttp://picflow.koolearn.com/upload/papers/20140824/20140824055454500339.png的终边关于y轴对称,则下列各式中正确的是

发布时间:2021-07-21

A.sinhttp://picflow.koolearn.com/upload/papers/20140824/20140824055454282310.png=sinhttp://picflow.koolearn.com/upload/papers/20140824/20140824055454500339.png

B.coshttp://picflow.koolearn.com/upload/papers/20140824/20140824055454282310.png=coshttp://picflow.koolearn.com/upload/papers/20140824/20140824055454500339.png

C.tanhttp://picflow.koolearn.com/upload/papers/20140824/20140824055454282310.png=tanhttp://picflow.koolearn.com/upload/papers/20140824/20140824055454500339.png

D.cos(2http://picflow.koolearn.com/upload/papers/20140824/20140824055454687309.pnghttp://picflow.koolearn.com/upload/papers/20140824/20140824055454282310.png)=coshttp://picflow.koolearn.com/upload/papers/20140824/20140824055454500339.png

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