三角函数:正弦、余弦、正切、余切、正割、余割,这些名字的来源是什么? 知乎 Template




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Try and sketch some of thesePigeon, Waiter waitress, Funeral, Strawberry, Birdhouse, Junkie, Lollipop sucker, Acorn, Squirrel, Diaper, view more ideas


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tomski三角函数:正弦、余弦、正切、余切、正割、余割,这些名字的来源是什么? 知乎 coloring