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(2001•吉林)如图,菱形ABCD的对角线AC=6,BD=8,∠ABD=α,则...
(2001•吉林)如图,菱形ABCD的对角线AC=6,BD=8,∠ABD=α,则下列结论正确的是( )
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131021232648433486307/SYS201310212326484334863026_ST/images0.png)
A.sinα=
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B.cosα=
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C.tanα=
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D.tanα=
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