做作业的时候发现的一个神奇的东西

这个星期的作业里面，有一个是求cos(sin-1x)是什么 ==b

偶想不出来大致的图像，于是尝试着用机子的Grapher输入不等式，得出来的图像如下
Trigonometric Function
于是，这是什么啊 lskonata05

Author: 星野恵瑠

Mac user, Niji-Ota, Chinese, Now working in Japan at MAGES. Inc., Future's aim is that one day my name can be listed in Wikipedia

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