Question

ABCD is a parallelogram and angle DAB = 60. If the bisectors AP and BP of angles A & B respectively meet at P on CD, Then proves that P is the midpt of CD.

Answer 1

(After this)
Now, we got
DP=DA=CB=PC=PB
Here, DP=pc
Hence, proved



Hope it helped ^_^

Answer 2

the following attachment is the solution of your question