汉字“切”的读音、意思、用法、解释及组词造句-汉语词典-范文网

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字词	切
释义	切切:ｑｉē（１）用刀把物品分成若干部分：把瓜～开◇～断敌军退路。（２）直线、圆或面等与圆、弧或球只有一个交点时叫做切。另见ｑｉè。【正切】直角三角形任意一锐角的对边与邻边的比，叫做该锐角的正切，用ｔｇ（角）表示，参看〖三角函数〗。【余切】直角三角形任意一锐角的邻边和对边的比，叫做该锐角的余切，用ｃｔｇ（角）表示，参看〖三角函数〗。【割切】见〖切割〗。
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