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cot 是 cos/sin 是男上女下
噢！不好意思⋯
我講錯野了⋯
我自己去面壁思過^_^
極座標是1671年牛頓作的⋯
不過唔緊要⋯
牛頓有些著作是來自卡笛兒的⋯
可能，卡笛兒用愛情公式交往了公主後⋯
不好意思發表⋯
留返比牛頓吧⋯
嘻嘻⋯
講下笑⋯
唔好介意🙏😂
cot = cos/sin
話說cos和tan的梗我真的看不懂(つд⊂)