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

  • question_answer
    The number of tangents that can be drawn from (0, 0) to the circle \[{{x}^{2}}+{{y}^{2}}+2x+6y-15=0\]is                               [MP PET 1992]

    A)            None                                        

    B)            One

    C)            Two

    D)            Infinite

    Correct Answer: A

    Solution :

               Since\[{{S}_{1}}<0\]. Point lies inside the circle, hence no tangent can be drawn.


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