已知圆M;2X*X+2Y*Y-8X-8Y-1=0和直线L:X+Y-9=0,过直线L上一点A作三角形ABC使角BAC=45°,AB过圆心M,且B,C在圆M上1:当A的横坐标为4时,求直线AC的方程2:求点A的横坐标的取值范围
来源:学生作业帮助网 编辑:作业帮 时间:2024/07/12 13:23:04
![已知圆M;2X*X+2Y*Y-8X-8Y-1=0和直线L:X+Y-9=0,过直线L上一点A作三角形ABC使角BAC=45°,AB过圆心M,且B,C在圆M上1:当A的横坐标为4时,求直线AC的方程2:求点A的横坐标的取值范围](/uploads/image/z/11471185-1-5.jpg?t=%E5%B7%B2%E7%9F%A5%E5%9C%86M%EF%BC%9B2X%2AX%2B2Y%2AY-8X-8Y-1%3D0%E5%92%8C%E7%9B%B4%E7%BA%BFL%3AX%2BY-9%3D0%2C%E8%BF%87%E7%9B%B4%E7%BA%BFL%E4%B8%8A%E4%B8%80%E7%82%B9A%E4%BD%9C%E4%B8%89%E8%A7%92%E5%BD%A2ABC%E4%BD%BF%E8%A7%92BAC%3D45%C2%B0%2CAB%E8%BF%87%E5%9C%86%E5%BF%83M%2C%E4%B8%94B%2CC%E5%9C%A8%E5%9C%86M%E4%B8%8A1%EF%BC%9A%E5%BD%93A%E7%9A%84%E6%A8%AA%E5%9D%90%E6%A0%87%E4%B8%BA4%E6%97%B6%2C%E6%B1%82%E7%9B%B4%E7%BA%BFAC%E7%9A%84%E6%96%B9%E7%A8%8B2%EF%BC%9A%E6%B1%82%E7%82%B9A%E7%9A%84%E6%A8%AA%E5%9D%90%E6%A0%87%E7%9A%84%E5%8F%96%E5%80%BC%E8%8C%83%E5%9B%B4)
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