2025年教学资料:4.3.2 单位圆与三角函数(分层作业)(原卷版)
4.3.2单位圆与三角函数分层作业1.的值等于( )A.B.C.D. 2.( )A.1B.C.D. 3.若且,则角是第象限角. 4.(填) 5.若且,则是第象限角. 6.根据任意角的三角函数定义,将正弦、余弦、正切函数在弧度制下的值在各象限的符号(用“+”或“-”)填入括号(填错任何一个将不给分).基础巩固 1.sin(-π)的值等于( )A. B.-C.D.-2.确定下列各三角函数值的符号:(1)cos 260°;(2)sin(-);(3)tan.3.的值为( )A.B.C.D. 4.若,,则是第象限角. 5.已知,则角属于第 象限. ...
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