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Angle between the lines x^(2)+2xysecalph...

Angle between the lines `x^(2)+2xysecalpha+y^(2)=0` is

A

`(pi)/(5)`

B

`(pi)/(4)`

C

`alpha`

D

`2alpha`

Text Solution

Verified by Experts

The correct Answer is:
C
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AAKASH SERIES-PAIR OF STRAIGHT LINES-PRACTICE EXERCISE
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  2. The product of the perpendiculars from (-1, 2) to the pair of lines 2x...

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  3. Angle between the lines x^(2)+2xysecalpha+y^(2)=0 is

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  4. If the pair of lines given by (x^(2)+y^(2))cos^(2) theta=(x cos theta+...

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  5. If the acute angle between the pair of lines x^(2)+4sqrt2xy+lamday^(...

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  6. If the pair of lines given by lamda(lamda-3)x^(2)+16xy+(lamda+1)y^(2)=...

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  7. The angle between the straight lines represented by (x^(2)+y^(2))sin^(...

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  8. The equation of the bisector of the acute angle between the lines 4x-3...

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  9. The equation of the bisector of obtuse angle between the lines 12x - 5...

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  10. One bisector of a(x-1)^(2)+2h(x-1)y+by^(2)=0 is 2x+y-2=0 is then other...

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  11. The lines x^(2)-12xy+6y^(2)=0 are equally inclined to the line

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  12. If the lines x^(2)+(2+h)xy-4y^(2)=0 are equally inclincd to the coordi...

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

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  14. The pair of lines h(x^(2)-y^(2))+pxy=0 bisects the angle between ax^(...

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  15. If the two pairs of lines ax^(2)+2pxy-ay^(2)=0 and bx^(2)+2qxy-by^(2)=...

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  16. If the paris x^(2)-2pxy-y^(2)=0 and x^(2)-2qxy-y^(2)=0 are such that o...

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  17. The pair of lines 2x^(2)+3xy+5y^(2)=0 and 4x^(2)+21xy+25y^(2)=0 are

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  18. If the two pair of lines 2x^(2)+6xy+y^(2)=0 and 4x^(2)+18xy+by^(2)=0 a...

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  19. If 2x^(2)-5xy+2y^(2)=0 represents two equal sides of an isosceles tria...

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  20. The value of k such that the lines 6x^(2)+17xy+12y^(2)=0 and kx^(2)+5x...

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