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The lengths of the tungents from the poi...

The lengths of the tungents from the points A and B to the circle are `l_(1) and l_(2)` respectively. If A and are conjugate points, then `AB^(2)=`

A

`l_(1)^(2)-l_(2)^(2)`

B

`l_(1)^(2)+l_(2)^(2)`

C

`l_(1)^(2)+l_(2)^(2)`

D

`l_(1)^(2) l_(2)^(2)`

Text Solution

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The correct Answer is:
B
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DIPTI PUBLICATION ( AP EAMET)-CIRCLE-Exercise 1C(Pole, Polar)
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  2. Let A and B be two fixed points. If a perpendicular p is drawn fros A ...

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  3. The lengths of the tungents from the points A and B to the circle are ...

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  4. The polars of any two points A and B wrt a circle, centre O meet at P....

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  5. If polar of P w.r.t. S=0 touch the circle x^(2)+y^(2)=a^(2), the locus...

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  6. The locus of poles of tangents to the circle x^(2)+y^(2)=a^(2) w.r.t t...

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  7. The locus of poles of tangents to the circle (x-p)^(2)+y^(2)=b^(2) w.r...

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  8. If the polars of points on the circle x^2+y^2=a^2 w.r.t. the circle x^...

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  9. Polar of the origin w.r.t. the circle x^2+y^2+2ax+2by+c=0 touches the...

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  10. A tangent at a point on the circle x^(2)+y^(2)=a^(2) intersects a conc...

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  11. The pole of a straight line with respect to the circle x^(2)+y^(2)=a^(...

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  12. The locus of the point, the chord of contact of which wrt the circle x...

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  13. The locus of the point, whose chord of contact w.r.t the circle x^(2)...

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  14. The condition that the chord of contact of the point (b,c) w.r.t. to t...

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  15. If the pole of the line with respect to the circle x^(2)+y^(2)=c^(2) l...

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  16. A point P is taken on the circle x^(2)+y^(2)=a^(2) and PN, PM are draw...

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  17. If the pole of a line w.r.t to the circle x^(2)+y^(2)=a^(2) lies on th...

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  18. The area of the triangle formed by the tangents from (1,3) to the circ...

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  19. The locus of the poles of the line ax+by+c=0 w.r.t a system of circles...

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