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If C is the reflection of A (2, 4) in x-...

If C is the reflection of A (2, 4) in x-axis and B is the reflection of C in y-axis, then | AB | is :

A

20

B

`2 sqrt5`

C

`4 sqrt5`

D

4

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MODERN PUBLICATION-CONIC SECTIONS-EXERCISE
  1. The total number of tangents through the point (3, 5) that can be draw...

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  2. The co-ordinates of the foot of the perpendicular from (0, 0) upon the...

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  3. If C is the reflection of A (2, 4) in x-axis and B is the reflection o...

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  4. The line y=2t^2 intersects the ellipse x^2/9+y^2/4=1 in real points if...

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  5. The coordinates of the focus of the parabola described parametrically ...

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  6. A positive acute angle is divided into two parts whose tangents are 1/...

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  7. The angle between the line joining the foci of an ellipse to one parti...

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  8. The circles : x^2+y^2 - 10x + 16 =0 and x^2+y^2 =a^2 : intersect at tw...

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  9. The number of points on the line x + y = 4, which are unit distance ap...

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  10. For the two circles x^2+y^2= 16 and x^2+y^2-2y=0 there is/are :

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  11. If C is a point on the line segment joining A (-3, 4) and B (2, 1) suc...

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  12. The point (-4,5) is the vertex of a square and one of its diagonals is...

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  13. The vertices of a family of triangles have integer co-ordinates. If tw...

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  14. A line has slope m and y-intercept 4. The distance between the origin ...

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  15. One side of length 3a of a triangle of area a^2 square units lies on t...

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  16. The distance of the point (1, 2) from the line x+y+5 = 0 measured alon...

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  17. Area of the triangle formed by the lines y=2x, y=3x and y=5 is equal t...

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  18. Triangle ABC has vertices (0, 0) (11, 60) and (91, 0). If the line y= ...

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  19. If the lines y= 3x + 1 and 2y = x + 3 are equally inclined to the line...

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  20. The vertices of a triangle are (3, 0), (3, 3) and (0, 3). Then the coo...

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