快乐学习 自信成长
P2H?OP2?sin?AOP2?313， ??224?33??P2?········································································································ 9分
?4，4??. ·??综上所述，符合条件的P点坐标有?1，?
??3??33?，?，?. ???3???44?
16 / 16
---------------------------------------------------------------------------------------------------------------------------------------------------------- 地址：燕平路商贸楼5号（昌平五中北100米路西，东关南里小区西门正对面） 电话：57251590 57112773