Home
Class 12
PHYSICS
The magnitudes of vectors vecA,vecB and ...

The magnitudes of vectors `vecA,vecB and vecC` are 3,4 and 5 units respectively. If `vecA+vecB= vecC`, the angle between `vecA` and vecB` is

A

`(pi)/(2)`

B

`cos^(-1)(0.6)`

C

`tan^(-1)((7)/(5))`

D

`(pi)/(4)`

Text Solution

Verified by Experts

The correct Answer is:
A

`C=sqrt(A^(2)+B^(2))`
`=sqrt(3^(2)+4^(2))=5`
Angle between `vec(A)` and `vec(B)` is `(pi)/(2)`
Promotional Banner

Topper's Solved these Questions

  • CENGAGE PHYSICS DPP

    CENGAGE PHYSICS|Exercise Fill in the blanks type|26 Videos

  • CENGAGE PHYSICS DPP

    CENGAGE PHYSICS|Exercise Comprehension Type|31 Videos

  • CENGAGE PHYSICS DPP

    CENGAGE PHYSICS|Exercise Multiple Correct Answer Type|54 Videos

  • CAPACITOR AND CAPACITANCE

    CENGAGE PHYSICS|Exercise Integer|5 Videos

  • CENTRE OF MASS CONVERSATION OF MOMENTUM AND COLLISION

    CENGAGE PHYSICS|Exercise Question Bank|38 Videos

Similar Questions

Explore conceptually related problems

The magnitudes of vectors vecA.vecB and vecC are respectively 12,5 and 13 unira and vecA+vecB=vecC , then the angle between vecA and vecB is :

A magnitude of vector vecA,vecB and vecC are respectively 12, 5 and 13 units and vecA+vecB=vecC then the angle between vecA and vecB is

If vecA = vecB + vecC and the magnitudes of vecA, vecB and vecC are 5,4 and 3 units respecetively, the angle between vecA and vecC is :

Given : vecC=vecA+vecB . Also , the magnitude of vecA,vecB and vecC are 12,5 and 13 units respectively . The angle between vecA and vecB is

vecA, vecB and vecC are vectors such that vecC= vecA + vecB and vecC bot vecA and also C= A . Angle between vecA and vecB is :

If three unit vectors veca, vecb and vecc " satisfy" veca+vecb+vecc= vec0 . Then find the angle between veca and vecb .

Let vea, vecb and vecc be unit vectors such that veca.vecb=0 = veca.vecc . It the angle between vecb and vecc is pi/6 then find veca .

Let vecA , vecB and vecC be vectors of legth , 3,4and 5 respectively. Let vecA be perpendicular to vecB + vecC, vecB " to " vecC + vecA and vecC " to" vecA + vecB then the length of vector vecA + vecB+ vecC is __________.

Let vecA , vecB and vecC be vectors of legth , 3,4and 5 respectively. Let vecA be perpendicular to vecB + vecC, vecB " to " vecC + vecA and vecC " to" vecA + vecB then the length of vector vecA + vecB+ vecC is __________.

CENGAGE PHYSICS-CENGAGE PHYSICS DPP-Single Correct Answer type
  1. A boy walks uniformly along the sides of a rectangular park of size 40...

    Text Solution

    |

  2. When three forces of 50 N, 30 N and 15 N act on body, then the boy is

    Text Solution

    |

  3. The magnitudes of vectors vecA,vecB and vecC are 3,4 and 5 units respe...

    Text Solution

    |

  4. 100 coplanar forces each equal to 10 N act on a body. Each force makes...

    Text Solution

    |

  5. Five equal forces of 10 N each are applied at one point and all are ly...

    Text Solution

    |

  6. A scooter going due east at 10 ms^(-1) turns right through an angle of...

    Text Solution

    |

  7. A person goes 10 km north and 20 km east. What will be displacement fr...

    Text Solution

    |

  8. If the resultant of n forces of different magnitudes acting at a point...

    Text Solution

    |

  9. A force of 5 N acts on a particle along a direction making an angle of...

    Text Solution

    |

  10. y component of velocity is 20 and x component of velocity is 10. The d...

    Text Solution

    |

  11. A car travles 6km towards north at an angle of 45^(@) to the east and ...

    Text Solution

    |

  12. A vector vec(a) is turned without a change in its length through a sma...

    Text Solution

    |

  13. Find the resultant of the three vectors vec(OA), vec(OB) and vec(OC) s...

    Text Solution

    |

  14. Two forces, each of magnitude F have a resultant of the same magnitude...

    Text Solution

    |

  15. The resultant of vec(A)+vec(B) is vec(R )(1). On reversing the vector ...

    Text Solution

    |

  16. Forces F(1) and F(2) act on a point mass in two mutually perpendicular...

    Text Solution

    |

  17. The sum of two forces at a point is 16N. if their resultant is normal...

    Text Solution

    |

  18. If vector P, Q and R have magnitude 5,12,and 13 units and vec(P)+vec(Q...

    Text Solution

    |

  19. The resultant of two vectors vecA and vecB is perpendicular to the vec...

    Text Solution

    |

  20. The resultant vec(P) and vec(Q) is perpendicular to vec(P). What is th...

    Text Solution

    |