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If the pair of lines a x^(2)+2 h x y+b y...

If the pair of lines `a x^(2)+2 h x y+b y^(2)=0` is rotated about the origin through `90^(0)`, then their equation in the new position is given by

A

`a x^(2)-2 h x y-b y^(2)=0`

B

`a x^(2)-2 h x y+b y^(2)=0`

C

`b x^(2)+2 h x y+a y^(2)=0`

D

`b x^(2)-2 h x y+a y^(2)=0`

Text Solution

Verified by Experts

The correct Answer is:
D
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HIMALAYA PUBLICATION-Pair Of Lines-QUESTION BANK
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  2. If x^(2)-k x y-y^(2)+2 y+2=0 represents a pair of lines than the valu...

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  3. If the pair of lines a x^(2)+2 h x y+b y^(2)=0 is rotated about the or...

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  4. Area of triangle formed by : 2x^(2)+xy-3y^(2)=0 and x+y=3 is

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  7. Orthocentre of the triangle formed by the lines x+y+1=0 and 2 x^(2)-x ...

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  8. The angle between the pair of straight lines y^(2)sin^(2) theta -xy ...

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  9. The equation of pair of lines joining origin to the points of intersec...

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  10. The equation of second degree x^(2)+2 sqrt(2) x y+2 y^(2)+4 x+4 sqrt(2...

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  11. If the angle between two st lines represented by 2x^(2)+5xy+3y^(2)+7y...

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  12. If the lines joining the origin to the points of intersection of the ...

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  13. A diagonal of the rectangle formed by the lines x^(2)-7x+6=0 and y^(...

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  14. The equation of the pair of lines passing through (0,1) and parallel t...

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  15. If 4 x y+2 x+2 f y+3=0 represents a pair of lines, then f=

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  16. The equation of the pair of lines passing through the origin and each ...

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  17. The equation of the pair of lines passing through the origin and perpe...

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  18. If a x^(2)+2 h x y+b y^(2)+2 g x+2 f y+c=0 represents a parallel lines...

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  19. The product of the perpendiculars from (1, 1) to the pair of lines x^(...

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  20. If one of the lines ax^(2)+2hxy+by^(2)=0 bisects the angle between ...

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