来源:学生作业帮 编辑:神马作文网作业帮 分类:数学作业 时间:2024/11/07 03:34:23
tan632°24',sin263°42' 转为锐角三角函数,照片答,坐等
tan632°24'
=tan(360°+272°+24‘)
=tan(272°+24’)
=tan(180°+92°+24‘)
=tan(92°+24’)
=-tan(90°+2°+24‘)
=-ctg2°24’
sin263°42'
=sin(180°+83°+42‘)
=-sin(83°+42’)
=-sin83°42