已知平面直角已知平面直角坐标系中,A(6,2√3),B(8,0),圆C是△OAB的外接圆,过点(2,6)的直线l被圆所截得弦长为4√31)求圆C的方程及直线l的方程2)设圆M的方程为(x-4-7cosθ)^2+(y-7sinθ)^2=1,θ∈R,过圆M上
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![已知平面直角已知平面直角坐标系中,A(6,2√3),B(8,0),圆C是△OAB的外接圆,过点(2,6)的直线l被圆所截得弦长为4√31)求圆C的方程及直线l的方程2)设圆M的方程为(x-4-7cosθ)^2+(y-7sinθ)^2=1,θ∈R,过圆M上](/uploads/image/z/3962317-13-7.jpg?t=%E5%B7%B2%E7%9F%A5%E5%B9%B3%E9%9D%A2%E7%9B%B4%E8%A7%92%E5%B7%B2%E7%9F%A5%E5%B9%B3%E9%9D%A2%E7%9B%B4%E8%A7%92%E5%9D%90%E6%A0%87%E7%B3%BB%E4%B8%AD%2CA%286%2C2%E2%88%9A3%29%2CB%288%2C0%29%2C%E5%9C%86C%E6%98%AF%E2%96%B3OAB%E7%9A%84%E5%A4%96%E6%8E%A5%E5%9C%86%2C%E8%BF%87%E7%82%B9%282%2C6%29%E7%9A%84%E7%9B%B4%E7%BA%BFl%E8%A2%AB%E5%9C%86%E6%89%80%E6%88%AA%E5%BE%97%E5%BC%A6%E9%95%BF%E4%B8%BA4%E2%88%9A31%29%E6%B1%82%E5%9C%86C%E7%9A%84%E6%96%B9%E7%A8%8B%E5%8F%8A%E7%9B%B4%E7%BA%BFl%E7%9A%84%E6%96%B9%E7%A8%8B2%29%E8%AE%BE%E5%9C%86M%E7%9A%84%E6%96%B9%E7%A8%8B%E4%B8%BA%28x-4-7cos%CE%B8%29%5E2%2B%28y-7sin%CE%B8%29%5E2%3D1%2C%CE%B8%E2%88%88R%2C%E8%BF%87%E5%9C%86M%E4%B8%8A)
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