结果和答案不一样,不过还是谢谢了。
所有跟帖:
• It's same since cos^2(x) = 1-sin^2(x) -lhan- ♀ (0 bytes) () 02/18/2022 postreply 06:56:39
• It's same since cos^2(x) = 1-sin^2(x) -lhan- ♀ (0 bytes) () 02/18/2022 postreply 06:56:39
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