<p style="margin:0pt 0pt 0.0001pt; text-align:justify"><span style="font-size:10.5pt"><span style="line-height:150%"><span style="font-family:"Times New Roman""><span style="font-size:10.5000pt"><span style="font-family:宋体"><span style="line-height:150%"><font face="宋体">已知角</font></span></span></span><span style="font-size:10.5000pt"><span style="font-family:宋体"><span style="line-height:150%"><font face="宋体">α</font></span></span></span><span style="font-size:10.5000pt"><span style="font-family:宋体"><span style="line-height:150%"><font face="宋体">的顶点与直角坐标系的原点重合，始边在</font><font face="宋体">x正半轴，终边经过点（</font></span></span></span><img src="file:///C:\\Users\\ADMINI~1\\AppData\\Local\\Temp\\ksohtml5976\\wps20.png" style="width:24px; height:24px" /><span style="font-size:10.5000pt"><span style="font-family:宋体"><span style="line-height:150%"><font face="宋体">，</font><font face="宋体">-1），</font></span></span></span></span></span></span></p> <p style="margin:0pt 0pt 0.0001pt; text-align:justify"><span style="font-size:10.5pt"><span style="font-family:"Times New Roman""><span style="font-size:10.5000pt"><span style="font-family:宋体"><font face="宋体">则</font><font face="宋体">sin</font></span></span><span style="font-size:10.5000pt"><span style="font-family:宋体"><font face="宋体">α</font></span></span><span style="font-size:10.5000pt"><span style="font-family:宋体"><font face="宋体">的值是</font>   </span></span></span></span></p>免费搜答案|可以考资料网|考试试题|考试题库|找答案神器就上可以考(keyikao.com)