# Q no 20 @22 Q20. Given that PR =PS, RQ = PS and $\angle$SPT =102°, find the value of unknown angle $\angle$RPQ from the given figure. Q22. AB is the diameter of a given circle with centre O. If PA = PB and $\angle$PAC = 20°, find the value of $\angle$PAB and $\angle$ABC.

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