【高一数学】平面向量坐标相关题目》》》如下图所示,以原点和A(5,2)为定点作等腰Rt△OAB,使∠OBA=90°,求点B和向量AB的坐标.
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![【高一数学】平面向量坐标相关题目》》》如下图所示,以原点和A(5,2)为定点作等腰Rt△OAB,使∠OBA=90°,求点B和向量AB的坐标.](/uploads/image/z/4034273-41-3.jpg?t=%E3%80%90%E9%AB%98%E4%B8%80%E6%95%B0%E5%AD%A6%E3%80%91%E5%B9%B3%E9%9D%A2%E5%90%91%E9%87%8F%E5%9D%90%E6%A0%87%E7%9B%B8%E5%85%B3%E9%A2%98%E7%9B%AE%E3%80%8B%E3%80%8B%E3%80%8B%E5%A6%82%E4%B8%8B%E5%9B%BE%E6%89%80%E7%A4%BA%2C%E4%BB%A5%E5%8E%9F%E7%82%B9%E5%92%8CA%EF%BC%885%2C2%EF%BC%89%E4%B8%BA%E5%AE%9A%E7%82%B9%E4%BD%9C%E7%AD%89%E8%85%B0Rt%E2%96%B3OAB%2C%E4%BD%BF%E2%88%A0OBA%3D90%C2%B0%2C%E6%B1%82%E7%82%B9B%E5%92%8C%E5%90%91%E9%87%8FAB%E7%9A%84%E5%9D%90%E6%A0%87.)
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