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在Rt△ABC中,AB=23,∠BAC=30°,∴BC=3,AC=3.(1)如图(1),作DF⊥AC.∵Rt△ACD中,AD=CD,∴DF=AF=CF=32.∵BP平分∠ABC,∴∠PBC=30°,∴CP=BC•tan30°=1,∴PF=12,∴DP=PF2+DF2=102.(2)当P点位置如...
在Rt△ABC中,AB=23,∠BAC=30°,∴BC=3,AC=3.(1)如图(1),作DF⊥AC.∵Rt△ACD中,AD=CD,∴DF=AF=CF=32.∵BP平分∠ABC,∴∠PBC=30°,∴CP=BC•tan30°=1,∴PF=12,∴DP=PF2+DF2=102.(2)当P点位置如...