题干
在直角坐标系xOy中，曲线C的参数方程为 {x=3 cosθ y=sinθ
）=1．直线l与曲线C相交于点A，B．
| π |
| 4 |
---It’s very kind of you, but I have a much late in the office. I overslept this morning because my morning clock _______.