较短的直角边与最长的边（斜边）的比值
by StarKnight @ 2018-12-14 20:58:50
@[LinXuan](/space/show?uid=119062) 对边/斜边
by VenusM1nT @ 2018-12-14 20:59:45
上面不要误导
应该是$\frac {\text{对边}} {\text{斜边}}$
by x义x @ 2018-12-14 21:01:39
@[AC之心](/space/show?uid=71548) 暴露了你小学生的事实
by Ousmane_Dembele @ 2018-12-14 21:03:48
好看的波浪
by x_angelkawaii_x @ 2018-12-14 21:04:40
~~////////////////////~~
by Lates @ 2018-12-14 21:09:04
@[AC之心](/space/show?uid=71548) 蛤？
by Clever_Jimmy @ 2018-12-14 21:10:37
sin( )
by Lates @ 2018-12-14 21:11:08
~~三角函数~~
by 万振阳 @ 2018-12-14 21:19:59
@[Kyle_Lowry](/space/show?uid=48142) 其实对于这道题没错
by Hyle33ies @ 2018-12-14 21:20:27