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If the pairs of lines 3x^(2)-2pxy-3y^...

If the pairs of lines
`3x^(2)-2pxy-3y^(2)=0` and `5x^(2)-2qxy-5y^(2)=0` are such that each pair bisects the angle between the other pair then pq equals

A

1

B

-7

C

-9

D

-15

Text Solution

Verified by Experts

The correct Answer is:
D
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HIMALAYA PUBLICATION-Pair Of Lines-QUESTION BANK
  1. If the slope of one of the lines represented by ax^(2)-6xy+y^(2)=0 is...

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  2. If the pair of lines a x^(2)+2 h x y-a y^(2)=0 and b x^(2)+2 g x y-b y...

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  3. If the pairs of lines 3x^(2)-2pxy-3y^(2)=0 and 5x^(2)-2qxy-5y^(2)=0...

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  4. The equation x-y=4 and x^(2)+4xy+y^(2)=0 represent the sides of

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  5. 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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  6. If x^(2)-k x y-y^(2)+2 y+2=0 represents a pair of lines than the valu...

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

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  9. The equation of the pair of lines through the origin, the sum and the ...

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  10. Centroid of the triangle formed by the sides y-1 =0 and x^(2)+7xy+2y^(...

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

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

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

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

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

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

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

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

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

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

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