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ABCD is a cyclic quadrilateral. AB and D...

ABCD is a cyclic quadrilateral. AB and DC are produced to meet at P. If `angleADC = 70^@` and `angleDAB = 60^@`, then `anglePBC + anglePCB` is equals___

A

17 : 8

B

8 : 17

C

8 : 9

D

9 : 8.

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