问题:
如图,AB是⊙O的直径,AC是弦,若AB=2,AC=
3
,则∠AOC的度数是( )
A.120°
B.130°
C.140°
D.150°
如图,AB是⊙O的直径,AC是弦,若AB=2,AC=
,则∠AOC的度数是( )
3 |
A.120° | B.130° | C.140° | D.150° |
参考答案: