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在△ABC中,若tanA=1,sinB=,你认为最确切的判断是( ) A.△AB...
在△ABC中,若tanA=1,sinB=
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,你认为最确切的判断是( )
A.△ABC是等腰三角形
B.△ABC是等腰直角三角形
C.△ABC是直角三角形
D.△ABC是一般锐角三角形
考点分析:
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B.(-
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D.(-
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取1.732,结果保留3个有效数字)
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在△ABC中,∠C=90°,AB=2,AC=1,则sinB的值是( )
A.
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C.
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A.
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C.
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D.
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A.2
B.
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C.
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D.1
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