解答:
![](https://video.ask-data.xyz/img.php?b=https://iknow-pic.cdn.bcebos.com/738b4710b912c8fc08f03849ff039245d6882137?x-bce-process=image%2Fresize%2Cm_lfit%2Cw_600%2Ch_800%2Climit_1%2Fquality%2Cq_85%2Fformat%2Cf_auto)
解:∵在Rt△ABC中,∠C=90°,∠A=30°,
∴当AB=BP
1时,∠BAP
1=∠BP
1A=30°,
当AB=AP
3时,∠ABP
3=∠AP
3B=
∠BAC=
×30°=15°,
当AB=AP
2时,∠ABP
2=∠AP
2B=
×(180°-30°)=75°,
当AP
4=BP
4时,∠BAP
4=∠ABP
4,
∴∠AP
4B=180°-30°×2=120°,
∴∠APB的度数为:15°、30°、75°、120°.
故答案为:15°、30°、75°、120°.