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The equation of the tangents to the circ...

The equation of the tangents to the circle `x^(2)+y^(2)=4` which are parallel to x-axis are

A

`x=+-2`

B

`y=+-2`

C

`y=+-1`

D

`y=+-4`

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The correct Answer is:
B
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AAKASH SERIES-CIRCLES-EXERCISE -I
  1. The tangent to the circle x^(2)+y^(2)-4x+2y+k=0 at (1,1) is x-2y+1=0 t...

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  2. The equation of the tangents to the circle x^(2)+y^(2)=25 with slope 2...

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  3. The equation of the tangents to the circle x^(2)+y^(2)=4 which are par...

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  4. The point of contact of y=x+3sqrt(2) with x^(2)+y^(2)=9 is

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  5. The circle to which two tangents can be drawn from origin is

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  6. The equation of the normal to the circle x^(2)+y^(2)+6x+4y-3=0 at (1,-...

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  7. The number of tangents to the circle x^(2)+y^(2)=5, that can be drawn ...

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  8. The circle with centre (4,-1) and touching x-axis is

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  9. Circle touching both the axes and radius 5 is

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  10. The circle 4x^(2)+4y^(2)-12x-12y+9=0

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  11. The equation of the circle of radius 5 and touching the coordinate axe...

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  12. The circle x^(2)+y^(2)-2ax-2ay+a^(2)=0 touches axes of co ordinates at

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  13. If the line x+3y=0 is tangent at (0,0) to the circle of radius 1, then...

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  14. The y-intercept of the circle x^(2)+y^(2)+4x+8y-5=0 is

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  15. In intercept made by the circle with centre (2,3) and radius 6 on y-ax...

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  16. The intercept made by the circle x^(2)+y^(2)+4x-8y+c=0 on x-axis is 2s...

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  17. The centre of the circle passing through origin and making intercepts ...

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  18. If x^(2)+y^(2)-4x-6y+k=0 touches x-axis then k=

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  19. Statement I: The circle with the points of intersectionof the line 3x+...

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  20. Parametric equation of the circle x^(2)+y^(2)=16 are

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