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If px+qy=r be a tangent to the circle x...

If `px+qy=r` be a tangent to the circle `x^(2)+y^(2)=a^(2)` at any given point then find the equatin of the normal to the circle at the same point.

Answer

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Knowledge Check

  • The slope of the normal to the circle x^(2)+y^(2)=a^(2) at the point (a cos theta, a sin theta) is-

    A
    `- cot theta `
    B
    `- tan theta`
    C
    `tan theta`
    D
    ` cot theta `

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