高一数学公式
- 来源:互联网
- 发布时间:2026-05-05 02:15:06
tan(x+y)=sin(x+y)/cos(x+y)=sinxcosy+sinycosx/cosxcosysinxsiny=tanx+tany/1tanxtany;tan(xy)=sin(xy)/cos(xy)=sinxcosysinycosx/cosxcosy+sinxsiny=tanxtany/1+tanxtany。
tan(x+y)=sin(x+y)/cos(x+y)=sinxcosy+sinycosx/cosxcosysinxsiny=tanx+tany/1tanxtany;tan(xy)=sin(xy)/cos(xy)=sinxcosysinycosx/cosxcosy+sinxsiny=tanxtany/1+tanxtany。