若∠α的补角是它的余角的3倍,则∠α= 度.
考点分析:
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在函数y=
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中,自变量x的取值范围是
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A.1个
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如图,在平面直角坐标系xOy中,点A的坐标为(
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,1),点B是x轴上的一动点,以AB为边作等边三角形ABC、当C(x,y)在第一象限内时,下列图象中,可以表示y与x的函数关系的是( )
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C.
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D.
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D.
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,0)
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