高中数学代数与函数一函数练习题92
题目内容

http://picflow.koolearn.com/upload/papers/20140823/20140823231828499504.png的图象绕坐标原点O逆时针旋转角 http://picflow.koolearn.com/upload/papers/20140823/20140823231828514299.png后第一次与y轴相切,则角 http://picflow.koolearn.com/upload/papers/20140823/20140823231828514299.png满足的条件是(   )

2021-08-04

A.esinhttp://picflow.koolearn.com/upload/papers/20140823/20140823231828514299.png= coshttp://picflow.koolearn.com/upload/papers/20140823/20140823231828514299.png

B.sinhttp://picflow.koolearn.com/upload/papers/20140823/20140823231828514299.png= ecoshttp://picflow.koolearn.com/upload/papers/20140823/20140823231828514299.png

C.esinhttp://picflow.koolearn.com/upload/papers/20140823/20140823231828514299.png=l

D.ecoshttp://picflow.koolearn.com/upload/papers/20140823/20140823231828514299.png=1

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