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If the chord of contact of tangents from...

If the chord of contact of tangents from a point P `(x_1,y_1)` to the circle `x^2+y^2=a^2` touches the circle `(x-a)^2+y^2 = a^2`, then the locus of `(x_1, y_1)` is :

A

a circle

B

a parabola

C

an ellipse

D

a hyperbola.

Text Solution

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The correct Answer is:
B
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MODERN PUBLICATION-CIRCLES AND SYSTEMS OF CIRCLES -MCQs LEVEL - II
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  3. If the chord of contact of tangents from a point P (x1,y1) to the circ...

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  7. Two tangents to the circle x^2 + y^2 = 4 at the points A and B meet at...

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  8. If the radical axis of the circles x^2+y^2+2gx+2fy+c=0 and 2x^2+2y^2+3...

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  9. The equation of the circle having its centre on the line x +2y - 3 = 0...

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  12. The locus of the centre of a circle which cuts orthogonally the circle...

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  13. Co-ordinates of radical centre of the circles : x^2+y^2 = 9 , x^2+y^2 ...

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  14. The equation of the family of circles, which same radical axis, as the...

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  17. The equation of the four circles are (x pm a)^2 + (y pm a)^2 = a^2. Th...

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  18. The circles : x^2+y^2 +2g1x-a^2 =0 and x^2+y^2 +2g2x-a^2=0 cut each ot...

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