Home
Class 12
MATHS
The angle between the lines whose direct...

The angle between the lines whose direction cosines `l`, m, n satisfy the equations `5l+m+3n=0` and `5mn-2nl+6lm=0` is

Promotional Banner

Topper's Solved these Questions

  • QUESTION BANK 2021

    NAVNEET PUBLICATION - MAHARASHTRA BOARD|Exercise LINE AND PLANE |40 Videos

  • QUESTION BANK 2021

    NAVNEET PUBLICATION - MAHARASHTRA BOARD|Exercise LINEAR PROGRAMMING PROBLEMS|30 Videos

  • QUESTION BANK 2021

    NAVNEET PUBLICATION - MAHARASHTRA BOARD|Exercise PAIRS OF LINES |21 Videos

  • PROBABILITY DISTRIBUTION

    NAVNEET PUBLICATION - MAHARASHTRA BOARD|Exercise MULTIPLE CHOICE QUESTIONS|9 Videos

  • THREE DIMENSIONAL GEOMETRY

    NAVNEET PUBLICATION - MAHARASHTRA BOARD|Exercise MULTIPLE CHOICE QUESTIONS|8 Videos

Similar Questions

Explore conceptually related problems

The angle between the straight lines, whose direction cosines are given by the equations 2l+2m -n=0 and mn+nl+lm=0 , is :

Find the angle between the lines whose direction cosines are given by the equations 3l+m+5n=0 and 6mn-2nl+5lm=0

An angle between the lines whose direction cosines are given by the equations, 1+ 3m + 5n =0 and 5 lm - 2m n + 6 nl =0, is :

The angle between the lines whose direction cosines are given by the equatios l^2+m^2-n^2=0, m+n+l=0 is

The angle between the lines whose direction cosines satisfy the equations l+m+n=0 and l^(2)=m^(2)+n^(2) is (1) (pi)/(3)(2)(pi)/(4)(3)(pi)/(6) (4) (pi)/(2)

Show that the angle between the straight lines whose direction cosines are given by the equation l+m+n=0 and amn+bnl+clm=0 is pi/3 if 1/a+1/b+1/c=0

Let alpha be the angle between the lines whose direction cosines satisfy the equation l+m-n=0 and l^2+m^2-n^2=0 then value of (Sinalpha)^4+(Cosalpha)^4 is

NAVNEET PUBLICATION - MAHARASHTRA BOARD-QUESTION BANK 2021-VECTOR AND THREE DIMENSIONAL GEOMETRY
  1. Find the centroid of tetrahedron with vertices K(5, -7, 0), L(1, 5, 3)...

    Text Solution

    |

  2. If a line has the direction ratios 4, -12, 18, then its direction cos...

    Text Solution

    |

  3. Show that the points A(2, -1, 0) B(-3, 0, 4), C(-1, -1, 4) and D(0, -5...

    Text Solution

    |

  4. Using properties of scalar triple product, prove that [(bar(a) + bar(b...

    Text Solution

    |

  5. The direction ratios of AB are -2,2,1. If A -= (4,1,5) and l(AB) = 6 u...

    Text Solution

    |

  6. If G(a,2,-1) is the centroid of the triangle with vertices P(1,3,2),Q(...

    Text Solution

    |

  7. If G(r, (-4)/(3), (1)/(3)) is centroid of the triangle having vertices...

    Text Solution

    |

  8. Prove that an angle inscribed in a semi-circle is a right angle usi...

    Text Solution

    |

  9. Prove using vectors: Medians of a triangle are concurrent.

    Text Solution

    |

  10. Show that the perpendicular bisectors of the sides of a triangle are c...

    Text Solution

    |

  11. Express -hat(i)-3hat(j)+4hat(k) as the linear combination of the vecto...

    Text Solution

    |

  12. If Q be the foot of perpendicular from P(2, 4, 3) on the line joining ...

    Text Solution

    |

  13. Prove that the internal bisectors of the angles of a triangle are conc...

    Text Solution

    |

  14. Using vector method, find the incenter of the triangle whose vertices ...

    Text Solution

    |

  15. The angle between the lines whose direction cosines l, m, n satisfy t...

    Text Solution

    |

  16. If A (bara) and B (barb) are any two points in the space and R(b...

    Text Solution

    |

  17. D,E divide sides BC and CA of a triangle ABC in the ratio 2:3 respecti...

    Text Solution

    |

  18. D,E divide sides BC and CA of a triangle ABC in the ratio 2:3 respecti...

    Text Solution

    |

  19. Find the value of a tetrahedrn whose vertices are A(-1,2,3),B(3,-2,1),...

    Text Solution

    |

  20. If four points A (overset(-)a), B(overset(-)b), C (overset(-)c) & D(o...

    Text Solution

    |