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如图,已知⊙O的半径是4,△ABC内接于⊙O,AC=4. (1)求∠ABC的度数; (2)已知AP是⊙O的切线,且AP=4,连接PC.判断直线PC与⊙O的位置关系,并说明理由.
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如图2426△ABC内接于⊙O.∠BAC=120°AB=AC=4BD为⊙O.的直径则BD=___
如图△ABC内接于⊙O.∠BAC=120°AB=AC=4BD为⊙O.的直径则BD等于
4
6
8
12
已知如图△ABC内接于⊙O.AB为直径∠CBA的平分线交AC于点F.交⊙O.于点D.DE⊥AB于点E
如图已知等边△ABC内接于⊙O.BD为内接正十二边形的一边CD=5cm求⊙O.的半径R..
如图△ABC内接于⊙O.∠BAC=120°AB=AC=4.BD为⊙O.的直径则BD=.
已知如图D.ABC内接于⊙O.AB为直径∠CBA的平分线交AC于点F.交⊙O.于点D.DE⊥AB于点
如图△ABC内接与⊙OAB是直径⊙O的切线PC交BA的延长线于点P.OF∥BC交AC于AC点E.交P
已知如图△ABC内接于⊙O.∠BAC=120°AB=ACBD为⊙O.的直径AD=6求BC的长.
如图锐角△ABC内接于⊙O.若⊙O.的半径为6求BC的长.
如图△ABC内接于⊙OAB是直径⊙O的切线PC交BA的延长线于点P.OF∥BC交AC于点E交PC于点
已知Rt△ABC中∠C.=90°AC=4BC=3.以AC上一点O.为圆心的⊙O.与BC相切于点C.与
如图已知△ABC是⊙O的内接三角形D是OA延长线上的一点连接DC且∠B=∠D=30°AC=4.1判断
如图△ABC内接于⊙O.∠ACB=∠D.=60°AC=3则⊙O.的半径为______.M.
如图△ABC内接于⊙OAB是直径⊙O.的切线PC交BA的延长线于点POF//BC交AC于点E.交PC
如图△ABC内接于⊙O.∠ACB=∠D.=60°AC=3则⊙O.的半径为______.M.
如图△ABC内接于⊙O.AB是直径⊙O.的切线PC交BA的延长线于点P.OF∥BC交AC于点E.交P
如图△ABC内接于⊙O.∠C.=45ºAB=4则⊙O.的半径为【】
2
4
2
如图△ABC内接圆于⊙O.∠B.=30°AC=2cm则⊙O.半径的长为_______cm.
如图已知⊙O.的半径为1锐角△ABC内接于⊙O.BD⊥AC于点D.OM⊥AB于点M.则sin∠CBD
OM的长
2OM的长
CD的长
2CD的长
如图△ABC内接与⊙O.AB是直径⊙O.的切线PC交BA的延长线于点P.OF∥BC交AC于AC点E.
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