在平面直角坐标系中,三个点A(a,0)、B(a,b)、(0,b)的坐标满足(b-2a)²+ 4-a的算术平方根=0他们的坐标的坐标满足(b-2a)²+ 4-a的算术平方根=0若D、E分别为x轴、y轴负半轴上的动点,∠BCC、
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![在平面直角坐标系中,三个点A(a,0)、B(a,b)、(0,b)的坐标满足(b-2a)²+ 4-a的算术平方根=0他们的坐标的坐标满足(b-2a)²+ 4-a的算术平方根=0若D、E分别为x轴、y轴负半轴上的动点,∠BCC、](/uploads/image/z/7110593-17-3.jpg?t=%E5%9C%A8%E5%B9%B3%E9%9D%A2%E7%9B%B4%E8%A7%92%E5%9D%90%E6%A0%87%E7%B3%BB%E4%B8%AD%2C%E4%B8%89%E4%B8%AA%E7%82%B9A%EF%BC%88a%2C0%EF%BC%89%E3%80%81B%28a%2Cb%29%E3%80%81%280%2Cb%29%E7%9A%84%E5%9D%90%E6%A0%87%E6%BB%A1%E8%B6%B3%EF%BC%88b-2a%EF%BC%89%26%23178%3B%2B+4-a%E7%9A%84%E7%AE%97%E6%9C%AF%E5%B9%B3%E6%96%B9%E6%A0%B9%3D0%E4%BB%96%E4%BB%AC%E7%9A%84%E5%9D%90%E6%A0%87%E7%9A%84%E5%9D%90%E6%A0%87%E6%BB%A1%E8%B6%B3%EF%BC%88b-2a%EF%BC%89%26%23178%3B%2B+4-a%E7%9A%84%E7%AE%97%E6%9C%AF%E5%B9%B3%E6%96%B9%E6%A0%B9%3D0%E8%8B%A5D%E3%80%81E%E5%88%86%E5%88%AB%E4%B8%BAx%E8%BD%B4%E3%80%81y%E8%BD%B4%E8%B4%9F%E5%8D%8A%E8%BD%B4%E4%B8%8A%E7%9A%84%E5%8A%A8%E7%82%B9%2C%E2%88%A0BCC%E3%80%81)
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