Home
Class 11
MATHS
The angle between the pair of straight l...

The angle between the pair of straight lines `2x^2+5xy+2y^2+3x+3y+1=0` is
(A)` cos^(-1)(4/5)`
(A) `tan^(-1)(4/5)`
(A)` pi/2`
(D) `0`

A

`cos^(-1)(4//5)`

B

`tan^(-1)(4//5)`

C

0

D

`pi//2`

Text Solution

Verified by Experts

The correct Answer is:
A
Promotional Banner

Topper's Solved these Questions

  • PAIR OF STRAIGHT LINES

    OBJECTIVE RD SHARMA ENGLISH|Exercise Chapter Test|18 Videos

  • PAIR OF STRAIGHT LINES

    OBJECTIVE RD SHARMA ENGLISH|Exercise Section II - Assertion Reason Type|3 Videos

  • MEAN VALUE THEOREMS

    OBJECTIVE RD SHARMA ENGLISH|Exercise Exercise|28 Videos

  • PARABOLA

    OBJECTIVE RD SHARMA ENGLISH|Exercise Chapter Test|30 Videos

Similar Questions

Explore conceptually related problems

Findthe angle between the pair of straight lines x^2 -4y^2+3xy = 0

Find the angle between the pair of straight lines x^(2) - 3xy +2y^(2) = 0

Find the obtuse angle between the straight lines 9x+3y-4=0 and 2x+4y+5=0 .

The angle between the regression lines: x-2y+3=0, 4x-5y+1=0 is

Find the angles between the pairs of straight lines: y=(2-sqrt(3))x+5\ a n d\ y=(2+sqrt(3))x-7.

The angle between the pair of lines whose equation is 4x^(2)+10xy+my^(2)+5x+10y=0 , is

The point of intersection of the two lines given by 2x^2-5xy +2y^2-3x+3y+1=0 is

The angle between the tangents to the curves y=x^2a n dx=y^2a t(1,1) is cos^(-1)(4/5) (b) sin^(-1)(3/5) tan^(-1)(3/4) (d) tan^(-1)(1/3)

Find the angles between each of the following pairs of straight line: 3x-y+5=0\ a n d\ x-3y+1=0

The angle between the straight lines given by the joint equation x^2+4xy+y^2+2x+4y+1 =0

OBJECTIVE RD SHARMA ENGLISH-PAIR OF STRAIGHT LINES-Exercise
  1. If the pair of straight lines a x^2+2h x y+b y^2=0 is rotated about th...

    Text Solution

    |

  2. If the lines represented by x^(2)-2pxy-y^(2)=0 are rotated about the o...

    Text Solution

    |

  3. The difference of the tangents of the angles which the lines x^(2)(sec...

    Text Solution

    |

  4. If the two pairs of line x^2 -2mxy -y^2=0 and x^2 - 2nxy -y^2 = 0 are ...

    Text Solution

    |

  5. Consider the equation of a pair of straight lines as lambda^(2)-10xy+1...

    Text Solution

    |

  6. The equation y^(2)-x^(2)+2x-1=0, represents

    Text Solution

    |

  7. The angle between the straight lines x^(2)-y^(2)-2x-1=0, is

    Text Solution

    |

  8. If the angle between the two lines represented by 2x^2+5x y+3y^2+6x+7y...

    Text Solution

    |

  9. The diagonal of the rectangle formed by the lines x^2-7x +6= 0 and y^2...

    Text Solution

    |

  10. The angle between the pair of straight lines 2x^2+5xy+2y^2+3x+3y+1=0 i...

    Text Solution

    |

  11. The circumcentre of the triangle formed by the lines, xy + 2x + 2y + 4...

    Text Solution

    |

  12. Distance between the lines represented by 9x^2-6x y+y^2+18 x-6y+8=0 , ...

    Text Solution

    |

  13. The joint equation of the straight lines x+y=1 and x-y=4, is

    Text Solution

    |

  14. If the slope of one of the lines given by ax^(2)-6xy+y^(2)=0 is square...

    Text Solution

    |

  15. The value of k such that 3x^(2)-11xy+10y^(2)-7x+13y+k=0 may repres...

    Text Solution

    |

  16. If x^(2)-kxy+y^(2)+2y+2=0 denotes a pair of straight lines then k =

    Text Solution

    |

  17. The equations of a line which is parallel to the line common to the p...

    Text Solution

    |

  18. If the slope of one of the lines given by 36x^(2)+2hxy+72y^(2)=0 is fo...

    Text Solution

    |

  19. The combined equation of the pair of the straight lines through the po...

    Text Solution

    |

  20. The equation x^(3)-6x^(2)y+11xy^(2)-6y^(3)=0 represents three straight...

    Text Solution

    |