发布时间:2025-01-24 05:09:30
1,如果是三角形中,四十五度角,可作垂线,转化为边相等
2,如果三角形是直角三角形,则两直角边相等
3,45度用弧度制表示=π/4
4,sin45=cos45=√2/2
tan45=cot45=1
想要一款外观好看的显示器在京东看到lg 22ea63tp和优派vx2209两款求推荐哪款好
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