已知圆C:(x﹣2)2+(y+1)2=3,从点P(﹣1,﹣3)发出的光线,经x轴反射后恰好经过圆心C,则入射光线的斜率为( )
如果α是第三象限角,那么﹣α,α2,2α的终边在第几象限?
A. Okay
B. I'm sick
C. What's the matter
Mom:Are you okay?
Mike:No, ____.
Mom:Let's see a doctor.
Mike: ____!
Doctor: ____?
Mike:My head hurts.