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The distance from a point (alpha,beta) t...

The distance from a point `(alpha,beta)` to a pair of lines passing through the origin is d. Then the equation to the pair of lines is

A

`(alphax+betay)^2=d^2(x^2+y^2)`

B

`(alphax+betay)^2=d^2(x^2+y^2)`

C

`(betax+alphay)^2=d^2(x^2+y^2)`

D

`(betax+alphay)^2=d^2(x^2+y^2)`

Text Solution

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The correct Answer is:
C
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AAKASH SERIES-PAIR OF STRAIGHT LINES-PRACTICE SHEET (EXERCISE-1 Homogeneous pair of line) (LEVEL-I Straight Objective Type Questions)
  1. The value of lambda " such that " lambdax^2-10xy+12y^2+5x-16y-3=0 repr...

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

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  3. The distance from a point (alpha,beta) to a pair of lines passing thro...

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  4. If x^(2)+4xy+4y^(2)+4x+cy+3 can be written as the product of two linea...

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  5. The equation x^2-5xy+py^2+3x-8y+2=0 represents a pair of straight line...

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  6. The angle between the pair of lines whose equation is 4x^2+10xy+my2+5...

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  7. The condition that one of the pair of lines ax^2+2hxy+by^2=0 be conici...

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  8. The equation of a line which is parallel to the line common to the pai...

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  9. Area of the triangle formed by the lines 3x^(2)-4xy+y^(2)=0, 2x-y=6 is

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  10. The area (in square units ) of the triangle formed by x+y+1=0 and the ...

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  11. The area (in square units ) of the triangle formed by x^2-3xy+2y^2=0 ...

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  12. The orthocentre of the triangle formed by the line x^2-3y^2=0 and the ...

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  13. The circumcentre of a triangle formed by the line x^2-y^2=0 and y-5=0...

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  14. The area of the square formed by lines 6x^2-5xy-6y^2=0 and 6x^2-5xy-6y...

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  15. The area of the triangle formed by the straight line x + y = 3 and the...

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  16. Area of quadrilateral formed by two pair of lines a^(2)x^(2)-b^(2)y^(2...

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  17. If 3x^(2)-11xy+10y^(2)-7x+13y+k=0 denotes a pair of straight lines, t...

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  18. The square of the distance of the point of intersection of the line 6x...

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  19. If the eqaution ax^(2)+2hxy +by^(2) +2g x +2fy+c=0 represents a pair ...

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  20. If the lines x^(2)+2xy-35y^(2)-4x+44y-12=0 and 5x+lambday-8=0 ae concu...

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