MCQOPTIONS
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				| 1. | 
                                    O is the center of the circle and two tangents are drawn from a point P to this circle at points A and B. If ∠AOP = 50°, then what is the value (in degrees) of ∠APB? | 
                            
| A. | 60 | 
| B. | 80 | 
| C. | 90 | 
| D. | 100 | 
| Answer» C. 90 | |