As shown in the figure, point P is outside circle O. PA and PB are connected. the straight lines PA and PB are the two tangents of circle O. If angle APB = 120.0, the radius of circle O is 10.0, then the length of chord AB is ()
Choices:
A:5
B:10
C:10√{3}
D:5√{3}
Please directly answer the question and provide the correct option letter, e.g., A, B, C, D.
Question: As shown in the figure, point P is outside circle O. PA and PB are connected. the straight lines PA and PB are the two tangents of circle O. If angle APB = 120.0, the radius of circle O is 10.0, then the length of chord AB is ()
Choices:
A:5
B:10
C:10√{3}
D:5√{3}
Please first conduct reasoning, and then answer the question and provide the correct option letter, e.g., A, B, C, D, at the end.
Question: As shown in the figure, point P is outside circle O. PA and PB are connected. the straight lines PA and PB are the two tangents of circle O. If angle APB = 120.0, the radius of circle O is 10.0, then the length of chord AB is ()
Choices:
A:5
B:10
C:10√{3}
D:5√{3}