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The ltngth of the tangtnt to the circle...

The ltngth of the tangtnt to the circle `x^(2)+y^(2)-2 x-y-7=0` at (-1,-3) is

A

8

B

`sqrt(8)`

C

`2 sqrt(3)`

D

-8

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The correct Answer is:
B
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HIMALAYA PUBLICATION-CIRCLES-QUESTION BANK
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  2. The equation of the circle concentric with the circle x^(2)+y^(2)+4 ...

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  3. The ltngth of the tangtnt to the circle x^(2)+y^(2)-2 x-y-7=0 at (-1,...

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  4. P is any point on the line x-y=0 for which the ltngths of tangtnts to ...

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  5. If 2 y+x+3=0 touches the circle 5 x^(2)+5 y^(2)=k then k=

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  6. The equation of the diameter of the circle x^(2)+y^(2)+6 x-4 y-2=0, p...

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  7. The number of tangtnts from (1,2) to the circle x^(2)+y^(2)-2 x-4 y+4...

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  8. The equation of the circle having radius 3 and touching the circle x^(...

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  9. The ltngth of the chord of the circle x^(2)+y^(2)-6 x+4 y-5=0 interce...

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  10. The circles x^2+y^2+4x+6y+3=0 and 2(x^2+y^2)+6x+4y+c=0 will cut ortho...

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  11. The circleS orthogonal to three circleS x^(2)+y^(2)+a(i) x+b(i) y+c=...

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  12. Find the equation of the circle with centre at (1,-2) and passing thro...

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  13. Two circleS of equal radius ' r ' cut orthogonally. If their centres ...

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  14. The points (0,0),(1,0),(0,1) and (t, t) are concyclic then t=

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  15. The equation of a diameter of the circle x^2 + y^2 = 2ay that is perpe...

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  16. The equation of the chord of the circle x^(2)+y^(2)-2 x-4 y-20=0 whos...

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  17. The common chord of x^(2)+y^(2)=16 and x^(2)+y^(2)-4 x-4 y=0 subtends ...

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  18. If the circles x^2+y^2+2x+2ky + 6=0 and x^2+y^2+2ky+k=0 intersect orth...

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  19. If the circles x^2+y^2+2x+2ky + 6=0 and x^2+y^2+2ky+k=0 intersect orth...

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  20. The radical axis of the circleS x^(2)+y^(2)+4 x=1 and 4 x^(2)+4 y^(2)...

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