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JEE Main & Advanced Mathematics Circle and System of Circles Question Bank Tangent and normal to a circle

  • question_answer
    The line \[y=mx+c\]will be a normal to the circle with radius r  and centre at (a, b), if

    A)            \[a=mb+c\]                             

    B)            \[b=ma+c\]

    C)            \[r=ma-b+c\]                           

    D)            \[r=ma-b\]

    Correct Answer: B

    Solution :

               Normal passes through centre, therefore\[b=ma+c\].


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