已知两个形状和大小完全相同的直角三角形ABC和直角三角形ADE,两条直角边的长分别为a、b,将它们如图一放置,使得点D、A、B在一条直线上.(1)用含a.b的代数式表示三角形EAC的面积,并化简(2
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![已知两个形状和大小完全相同的直角三角形ABC和直角三角形ADE,两条直角边的长分别为a、b,将它们如图一放置,使得点D、A、B在一条直线上.(1)用含a.b的代数式表示三角形EAC的面积,并化简(2](/uploads/image/z/2616222-30-2.jpg?t=%E5%B7%B2%E7%9F%A5%E4%B8%A4%E4%B8%AA%E5%BD%A2%E7%8A%B6%E5%92%8C%E5%A4%A7%E5%B0%8F%E5%AE%8C%E5%85%A8%E7%9B%B8%E5%90%8C%E7%9A%84%E7%9B%B4%E8%A7%92%E4%B8%89%E8%A7%92%E5%BD%A2ABC%E5%92%8C%E7%9B%B4%E8%A7%92%E4%B8%89%E8%A7%92%E5%BD%A2ADE%2C%E4%B8%A4%E6%9D%A1%E7%9B%B4%E8%A7%92%E8%BE%B9%E7%9A%84%E9%95%BF%E5%88%86%E5%88%AB%E4%B8%BAa%E3%80%81b%2C%E5%B0%86%E5%AE%83%E4%BB%AC%E5%A6%82%E5%9B%BE%E4%B8%80%E6%94%BE%E7%BD%AE%2C%E4%BD%BF%E5%BE%97%E7%82%B9D%E3%80%81A%E3%80%81B%E5%9C%A8%E4%B8%80%E6%9D%A1%E7%9B%B4%E7%BA%BF%E4%B8%8A.%EF%BC%881%EF%BC%89%E7%94%A8%E5%90%ABa.b%E7%9A%84%E4%BB%A3%E6%95%B0%E5%BC%8F%E8%A1%A8%E7%A4%BA%E4%B8%89%E8%A7%92%E5%BD%A2EAC%E7%9A%84%E9%9D%A2%E7%A7%AF%2C%E5%B9%B6%E5%8C%96%E7%AE%80%EF%BC%882)
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