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Find the condition under which the tange...

Find the condition under which the tangents at `(x_1, y_1)` and `(x_2, y_2)` to the circle `x^2+y^2+2gx+2fy+c=0` are perpendicular.

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MBD PUBLICATION-CONIC SECTIONS-QUESTION BANK
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  5. Find the equation of the tangents to the circle x^2+y^2=9, perpendicul...

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  7. Show that the line x - 7y + 5 = 0 is a tangent to the circle x^2+y^2-5...

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  11. Find the length of the tangent, drawn to the circles x^2+y^2+10x-6y+8=...

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  12. Find the length of the tangent drawn from the point (2, -1) to the cir...

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  13. Find the length of the tangent drawn from the point (4, 7) to the circ...

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  14. Prove that the circles given by the equations x^2+y^2+2x-8y+8=0 and x^...

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  15. Prove that the circles given by the equations x^2+y^2=4 and x^2+y^2+6x...

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  16. Prove that the two circles x^2+y^2+2by+c^2=0 and x^2+y^2+2ax+c^2=0, wi...

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  17. Prove that the circles given by x^2+y^2+2ax+2by+c=0, and x^2+y^2+2bx+2...

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