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(1).化简下面各比,求比值(写出主要过程) (2).急急急急急急急急急急急急急急急急急_百度知道
(1).化简下面各比,求比值(写出主要过程) (2).急急急急急急急急急急急急急急急急急
八分之三!:0!:0.49
八分之一!!.75
求比值(写出主要过程)160!:十六分之九(2)真的特急呀(1)化简下面各比
提问者采纳
3如果对你有帮助;3=1!.75=1/8*16&#47:80
=(160÷80)!.28:0:(80÷80)=2 八分之三:0.49
=28:6求比值(写出主要过程)160。祝进步:0。要采纳最先回答的正确答案哟:49=4:7 八分之一。谢谢;9=2/8*4&#47,请采纳:十六分之九=3&#47(1)化简下面各比
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来自团队:
其他类似问题
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80 = 2.75x8 =
2.28:0: 6160:0.49
9&#47:49 = 4:7
八分之一;8 :1
八分之三.75
1:十六分之九
80x2 (1)化简下面各比
等待您来回答
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出门在外也不愁初中三角函数.急急急急急急急急锐角△ABC中,BE、CF分别是AC、AB上的高,则S△AEF:S△ABC=(
)①(SinA)的平方 ②(CosA)的平方③(tanA)的平方④③(cotA)的平方要有过程
答案:②提示:S△AEF=(1/2)*AE*AF*SinA
S△ABC=( 1/2)*AB*AC*SinA
而CosA=AE:AB=AF:AC
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其他类似问题
选第二个作图得到AF=AC*cosA。所以AF/AC=cosA同理的AE/AB=cosA。易证2个三角形相似面积比的平方等于边长比的平方。所以是第二个
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