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由下列条件解△ABC,其中有两解的是( ) A.b=20,A=45°,C=80°...
由下列条件解△ABC,其中有两解的是( )
A.b=20,A=45°,C=80°
B.a=30,c=28,B=60°
C.a=12,c=15,A=120°
D.a=14,c=16,A=45°
考点分析:
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