A A B B C C D D E E

A 6π          B 4π          C 2π          D π

A cosθ>0，且tanθ>0      B cosθ<0，且tanθ>0     C cosθ<0，且tanθ<0    D cosθ>0，且tanθ<0

A 第一象限角        B 第二象限角       C 第三象限角       D 第四象限角 

A <img alt="" src="https://www.beizhujiaoyu.com/uploads/202208/20120921082795439543.gif" />      B <img alt="" src="https://www.beizhujiaoyu.com/uploads/202208/20120921082719481948.gif" />      C 120^。      D <img alt="" src="https://www.beizhujiaoyu.com/uploads/202208/20120921082781798179.gif" />

A <img alt="" src="https://www.beizhujiaoyu.com/uploads/202208/20120921082822382238.gif" />       B <img alt="" src="https://www.beizhujiaoyu.com/uploads/202208/20120921082890299029.gif" />      C -<img alt="" src="https://www.beizhujiaoyu.com/uploads/202208/20120921082869676967.gif" />       D -<img alt="" src="https://www.beizhujiaoyu.com/uploads/202208/20120921082854735473.gif" />

A -<img alt="" src="https://www.beizhujiaoyu.com/uploads/202208/20120921082823802380.gif" />       B -<img alt="" src="https://www.beizhujiaoyu.com/uploads/202208/20120921082987148714.gif" />       C 1       D -1

A 2        B 1        C -2         D -1

A sinα>0，cosα<0          B sinα>0，cosα>0          C sinα<0，cosα>0          D sinα<0，cosα<0      

A <img alt="" src="https://www.beizhujiaoyu.com/uploads/202208/20120921083970727072.gif" />        B <img alt="" src="https://www.beizhujiaoyu.com/uploads/202208/20120921083984058405.gif" />        C <img alt="" src="https://www.beizhujiaoyu.com/uploads/202208/20120921083990909090.gif" />        D <img alt="" src="https://www.beizhujiaoyu.com/uploads/202208/20120921083937063706.gif" />