题目内容
设直线ax-y+3=0与圆(x-1)2+(y-2)2=4相交于A、B两点,且弦AB的长为,则a=________.
设直线ax-y+3=0与圆(x-1)2+(y-2)2=4相交于A,B两点,且弦AB的长为,则a=________.
设直线ax-y+3=0与圆(x-1)2+(y-2)2=4相交于A、B两点,且弦AB的长为2,则a=________.
设直线ax-y+3=0与圆(x-1)2+(y-2)2=4相交于A、B两点,且弦AB的长为2,则a=__________