∴∠BAP=∠BAC-∠DAC=45 -30 = 15

In △ABP, ∫∠b+∠BAP+∠BPA = 180, while ∠ B = 90, ∠ BAP = 15.

∴∠bpa= 180-∠b-∠BAP = 180-90- 15 = 75

∠∠DPC =∠BPA (vertex angles are equal), and ∠ BPA = 75.

∴∠DPC=75

Answer: ∠ DPC = 75

Hope to adopt