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If x=7 tonches the circle x^(2)+y^(2)...

If `x=7` tonches the circle
`x^(2)+y^(2)-4 x-6 y-12=0` then the point of contact is

A

(7,3)

B

(7,4)

C

(7,8)

D

(7,2)

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The correct Answer is:
A
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HIMALAYA PUBLICATION-CIRCLES-QUESTION BANK
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  5. The angle between the tangents from the origin to the circle (x-7)^2 +...

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  8. The locus of the mid-points of chords of the circle x^2+y^2 =4, which ...

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  9. Let 'C' be the circle with centre (0,0 ) and radius 3 units. The equat...

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  10. If the line y=m x is outside the circle x^(2)+y^(2)-20 y+90=0 then

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

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  12. A square in inscribed in the circle x^(2)+y^(2)-2 x+4 y-3=0 . Its sid...

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  13. The circles x^(2)+y^(2)+6 x+k=0 and x^(2)+y^(2)+8 y-20=0 touch each o...

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  14. The area of the circle x^(2)+y^(2)-2 x+4 y-4=0 is

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  15. The points (1,0),(0,1),(0,0) and (2k,3k),k!=0 are concyclic if k =

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  16. From any point on the circle x^(2)+y^(2)=a^(2), tangtnts are drawn to...

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  17. Angle between tangents drawn from a point on the director circle x^(2...

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  19. The ltngth of the tangtnt from (5,3) to the circle x^(2)+y^(2)+10 x+k...

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  20. The equation of the tangtnt to the circle x^(2)+y^(2)-2 x+8 y-23=0 ha...

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