2025年教学资料:4.3.1任意角的三角函数定义(分层作业)(解析版)
4.3.1任意角的三角函数定义分层作业1.若角的终边经过点,则( )A.B.C.D.【答案】D【分析】根据题意,由三角函数的定义,即可得到结果.【详解】因为角的终边经过点,则.故选:D2.已知角的终边与单位圆的交点为,则的值为( )A.B.C.D.【答案】B【分析】根据任意角的三角函数的定义结合题意直接求解即可【详解】因为角的终边与单位圆的交点为,所以,故选:B3.已知角的终边经过点,则 , , .【答案】/ / /【分析】利用三角函数的定义进行计算即可.基础巩固【详解】因为,,所以点到原点的距离.于是,,.故答...
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