△PAB中,PA=PB,∠APB=2∠ACB,AC与PB相交于D,且PB=4,PD=3,求AD·DC的值
△PAB中,PA=PB,∠APB=2∠ACB,AC与PB相交于D,且PB=4,PD=3,求AD·DC的值
如图,若PA=PB=PC,∠APB=2∠ACB,AC与PB交于点D,且PB=4,PD=3,则AD·DC的值为 .
如图,若PA=PB,∠APB=2∠C,AC与PB交于点D,且PB=4,PD=3,求AD×DC的值
如图,若PA=PB,∠APB=2∠ACB,AC与PB交于点D,且PB=4,PD=3,则AD•DC=______.
如图PA=PB,角APB=2倍角ACB,AC与BP交点D,PB=4,PD=3,则AD乘DC=
一个初三的几何题PA=PB,角APB=2倍角ACB,AC与BP交点D,PB=4,PD=3,则AD乘DC=
如图ABCD是正方形,PD⊥面ABCD,PD=DC(1)求证:AC⊥PB;(2)求AD与PB所成角的正切值
已知△ABC中,∠ACB=90,PA、PB分别平分∠BAC和∠ABC.求∠APB
已知△ABC中,∠ACB=90,PA、PB分别平分∠BAC和∠ABC.求∠APB,
如图,△ABC中,AB=AC,AD⊥BC,P是AD上一点,PB平分∠ABC,若AC=6,BC=8,PD=2,求△APB的
已知如图,PA,PB分别于圆O相切于点A,B,PO与圆O相交于点D,且PA=4cm,PD=2cm,求半径
△ABC中,∠ACB=90°,D为AB中点,且PD⊥平面ABC,求证:PA=PB=PC