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The equation x^(2)-3xy+lambday^(2)+3x-5y...

The equation `x^(2)-3xy+lambday^(2)+3x-5y+2=0`, `lambdainR`, represents a pair of straight lines. If `theta` is the angle between these lines, then `cosec^(2)theta=`

A

`10`

B

`9`

C

`1`

D

`5`

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The correct Answer is:
A
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NIKITA PUBLICATION-PAIR OF STRAIGHT LINES-MULTIPLE CHOICE QUESTIONS
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  2. The angle between the pair of lines 2x^(2)+4xy-2y^(2)+4x+8y+1=0 is

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  3. The equation x^(2)-3xy+lambday^(2)+3x-5y+2=0, lambdainR, represents a ...

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  4. The acute angle between the line represented by 9x^(2)-6xy+y^(2)+18x-6...

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  5. The acute angle between the line represented by x^(2)-6xy+5y^(2)+10x-4...

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  6. The point of intersection of the lines represented by 2x^(2)-xy-3y^(2)...

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  7. The point of intersection of the lines represented by 2x^(2)+xy-y^(2)+...

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  8. The point of intersection of the lines given by 6x^(2)+xy-40y^(2)-35x-...

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  9. The point of intersection of the lines represented by (x-3)^(2)+(x-3)(...

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  10. If lambdax^2-5x y+6y^2+x-3y=0 represents a pair of staight lines, the...

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  11. If (1, k) is the point of intersection of the lines given by 2x^(2)+5x...

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  12. If the lines x^(2)-y^(2)-2x+2y=0 and x+2y+k=0 are concurrent, then k=

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  13. If the lines 2x^(2)-5xy+3y^(2)+8x-9y+6=0 and kx-y-5=0 are concurrent, ...

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  14. The point of intersection of lines represented by 2x^(2)+4xy-2y^(2)+4x...

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  15. The distance btween the parallel lines 9x^2-6xy+y^2+18x-6y+8=0, is

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  16. The distance between the parallel lines given by x^(2)+2sqrt(2)xy+2y^(...

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  17. The distance between the pair of parallel lines x^2+2xy+y^2-8ax-8ay-9a...

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  18. If the distance between two parallel lines given by 2x^(2)+4xy+2y^(2)+...

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  19. The distance between the lines given by (x-2y)^(2)+k(x-2y)=0 is 3, the...

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  20. Select and write the correct answer from the alternatives in each of t...

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