Question 1197237
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Ignore this solution. I misread the initial set up. 
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Answer: <font color=red>132 degrees</font>


Reason:
Angle PCB = 66 is an inscribed angle of circle P
Use the inscribed angle theorem to find that minor arc OB is 2*66 = 132 degrees. This is the shortest measure from point O to point B along the edge of the circle.
By definition, central angle OPB is the same measure of this minor arc because the central angle subtends the arc.


If it might help, erase circle O to avoid clutter.
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