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If two lines represented by x^2(tan^2the...

If two lines represented by `x^2(tan^2theta+cos^2theta)-2xytantheta+y^2sin^2theta=0` make angles `alpha, beta` with x-axis then

A

`-2`

B

`2`

C

`-4`

D

`4`

Text Solution

Verified by Experts

The correct Answer is:
B
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NIKITA PUBLICATION-PAIR OF STRAIGHT LINES-MULTIPLE CHOICE QUESTIONS
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  8. If the slope of one of the lines represented by ax^(2)+2hxy+by^(2)=0 ...

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  10. If the slope of one of the line given by 2px^(2)-16xy+qy^(2)=0 is 2, t...

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  11. If 2x+y=0 is one of the lines given by 3x^(2)+kxy+2y^(2)=0, then k=

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  12. Find k, if one of the lines given by 6x^(2) + kxy + y^(2) = 0 is 2x + ...

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  17. If the line 4x-5y=0 coincide with one of the lines given by ax^(2)+2hx...

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  18. If one of the lines given by kx^(2)-5xy-3y^(2)=0 is perpendicular to t...

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  19. If one of the lines given by 3x^(2)-kxy+5y^(2)=0 is perpendicular to t...

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