No Plagiarism!EnaVG8OmGLJyZsUSwtLyposted on PENANA 我發現sin跟cos是一對互攻的小情侶8964 copyright protection155PENANAaiGQn0E59h 維尼
如果他們躺著(0°)sin是0 cos是1 8964 copyright protection155PENANAhKWGYVDH8t 維尼
如果他們站著(90°)sin是1 cos是08964 copyright protection155PENANAI7fLylp06I 維尼
216.73.216.247
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