檢視余切函数的原始碼

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| style="background: #FF2400" align= center|  '''<big>余切函数</big>'''
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中文名；余切函数

表达式；f(x)=cotx

外文名；cot

领 域；三角函数
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在直角三角形中，某锐角的相邻直角边和相对直角边的比，叫做该锐角的余切。余切与正切互为[[倒数]]，用“cot+角度”表示。'''余切函数'''的图象由一些隔离的分支组成(如图)。余切函数是无界函数，可取一切实数值，也是奇函数和周期函数，其最小正[[周期]]是π。<ref>[https://wenku.so.com/d/60cfc488817a37b404dcb75af75bc5d9 余切函数],360文库 , 2018年10月15日</ref>