正切

正切
zhèngqiē
[tangent] 当某角的顶点与平面直角坐标系的原点重合, 而该角的始边又与X轴的正向重合时, 角终边上任意点的纵坐标除以该点的非零横坐标所得的商

Advanced Chinese dictionary. 2013.

Игры ⚽ Нужно сделать НИР?

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