檢視正切函数的原始碼

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

外文名；tangent

简写；tan、tg

中文；正切函数

定义域；{x丨x≠(π/2)+kπ, k∈Z}

值域；R

奇偶性；奇函数
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正切，数学术语，在Rt△ABC（直角[[三角形]]）中，∠C=90°，AB是∠C的对边c，BC是∠A的对边a，AC是∠B的对边b，'''正切函数'''就是tanB=b/a，即tanB=AC/BC。<ref>[https://qb.zuoyebang.com/xfe-question/question/f13de0ecc25f4e9ffb931e23a4c7fbcd.html 正切函数的性质与图像,],作业帮 , 2017年9月22日</ref>