Home
Class 11
PHYSICS
Determine the sine of the angle between ...

Determine the sine of the angle between the vectors .
`2 hat I + 3 hat j -4 hat k` and ( hat i-2 hat k).

Text Solution

Verified by Experts

Here `vec A =( 2 hat I + 3 hat j -4 hat k)`
and `vec B =(hat I -2 hat j + 2 hat k)`
` (vec A xx vec B) =|(hat I, hat j, hat k), (2, 3, -4),(1, -2, 2)|`
`=hat I (6-8 ) + hat j (-4 -4 ) + hat k (-4 -3)`
`=- 2 hat I -8 hat j-7 hat k`
`| vec A xx vec B| = sqrt ((-2)^(2) + (-8)^(2) + (-7) ^(2)) = sqrt (29),`
`| vec B | = sqrt (1^(2) + (-2)^(2) + 2^(2)) =sqrt 9`
`sin theta = (|vec A xx vec B|)/(|vec A | | vec B|) =(sqrt117)/(sqrt 29 sqrt9) =(sqrt 23)/(29)`
` or `theta = sin^(-1) sqrt (13)/(29)`.
Promotional Banner

Topper's Solved these Questions

  • KINEMATICS

    PRADEEP|Exercise 4 SolvedExamples|31 Videos
  • KINEMATICS

    PRADEEP|Exercise 1 Conceptual Problems|2 Videos
  • KINEMATICS

    PRADEEP|Exercise 2 SolvedExamples|31 Videos
  • GRAVIATION

    PRADEEP|Exercise Assertion-Reason Type Questions|19 Videos
  • LAWS OF MOTION

    PRADEEP|Exercise Assertion- Reason Type Questions|17 Videos

Similar Questions

Explore conceptually related problems

Determine the sine of the angle between the vectors ( 3 hat i+ 3hat j+ 4 hat k) and ( 3 hat i-2 hat j - 4 hat k0 .

The angle between the vectors (hat i + hat j + hat k) and ( hat i - hat j -hat k) is

Find he cosine of the angle between the vectors 4hat i-3hat j+3hat k and 2hat i-hat j-hat k

Find the sine of the angle between the vectors vec A = 3 hat i - 4 hat j + 5 hat k and vec B = hat i - hat j + hat k .

Find the angle between the vectors hat i-2hat j+3hat k and 3hat i-2hat j+hat k

the angle between the vectors 2hat i-3hat j+2hat k and hat i+5hat j+5hat k is

Find the angle between the vectors vec A = hat I + 2 hat j- hat k and vec B =- hat I + hatj - 2 hat k .

Find the angle between the vectors 2hat i-hat j+2hat k and 3hat i+3hat j+4hat k .

Find the angle between the vectors 2hat i-hat j+2hat k and 3hat i+3hat j+4hat k .

Find angle between the vectors vec a=hat i+hat j-hat k and vec b=hat i-hat j+hat k

PRADEEP-KINEMATICS-3 SolvedExamples
  1. Give vrc A =2 jati -hatj+3 hat k and vec B =3 hat I -2 hat j -2 hat k...

    Text Solution

    |

  2. A vector vec C when added to the resultant of the vectors vec A = 3 ha...

    Text Solution

    |

  3. If vec A =3 hat I + 4 hat j and vec B =7hat I + 14 hat j, find a vect...

    Text Solution

    |

  4. If the magniude of two vectors are 6 N and 3 N and magnitude of their ...

    Text Solution

    |

  5. For what value of (m), the vector vec A =2 hat I + 3 hat j -6 hat j is...

    Text Solution

    |

  6. If vec A =4 hat I + 6 hat j -3 hat k and vec B =- 2 hat I -5 hat j +...

    Text Solution

    |

  7. Find the component of a vector vec A = 3 hat I + 4 hat j along the di...

    Text Solution

    |

  8. If vectors vec A , vec B and vec Chave magnitudes 5, 12 and 13 units ...

    Text Solution

    |

  9. If vec A + vec B =3 hat I + 6 hat j + 2 hat k and vec A - vec B = 6 h...

    Text Solution

    |

  10. Unit vector hat(P) and hat(Q) are inclined at an angle theta. Prove th...

    Text Solution

    |

  11. Find the angle between force vec F =(3 hat I + 4 hat j -5 hat k) and ...

    Text Solution

    |

  12. Find the scalr and vector products of two vectors vec a =(3 hat I - 4...

    Text Solution

    |

  13. Show that vectors vec A =2 hat I -3 hat j - hat k and vec vec B =- ...

    Text Solution

    |

  14. Calculate the area of a paralleleogram whose two adjacent sides are fo...

    Text Solution

    |

  15. The diagonals if a parallele-gram are representde by vec d(1) =2 hat ...

    Text Solution

    |

  16. Determine the sine of the angle between the vectors . 2 hat I + 3 hat...

    Text Solution

    |

  17. Determine a unit vector whoch is perpendicular to both vec A =2 hat...

    Text Solution

    |

  18. The edges of a parallelopiped are geven by the vectors (2 hat I + 3 h...

    Text Solution

    |

  19. A paarticle starts from origin at t=0 with a vction 5.0 hat I m//s a...

    Text Solution

    |

  20. If vec A=hat I + 2 hat j -3 hat k, vec B =2 hat I -hat j + hat k and...

    Text Solution

    |