Home
Class 12
MATHS
Vector vec a , vec b and vec c are suc...

Vector ` vec a , vec b` and ` vec c` are such that ` vec a+ vec b+ vec c= vec0` and `|a|=3,| vec b|=5` and `| vec c|=7.` Find the angle between ` vec a` and ` vec b` .

Promotional Banner

Topper's Solved these Questions

  • CUET MOCK TEST 2022

    XII BOARDS PREVIOUS YEAR|Exercise Question|49 Videos

Similar Questions

Explore conceptually related problems

vec a + vec b + vec c = vec 0, | vec a | = 3, | vec b | = 5, | vec c | = 9 find the angle between vec a and vec c

vec a + vec b + vec c = vec 0, | vec a | = 3, | vec b | = 5, | vec c | = 7 then angle between vec a and vec b is

vec a+vec b+vec c=vec 0,vec |a|=3,|vec b|=5 and |vec c|=7 find the anglebetweeen vec a and vec b

If vec a + vec b = vec c and | vec a | = | vec b | = | vec c | find the angle between vec a and vec b

If |vec a|=3,|vec b|=5,|vec c|=7 and vec a+vec b+vec c=0 then angle between vec a and vec b is

If vec(a) , vec(b) and vec(c ) be three vectors such that vec(a) + vec(b) + vec(c )=0 and |vec(a)|=3, |vec(b)|=5,|vec(C )|=7 , find the angle between vec(a) and vec(b) .

If |vec a|+|vec b|=|vec c| and vec a+vec b=vec c, then find the angle between vec a and vec b

Let vec(a), vec(b) and vec(c) be three vectors such that vec(a) + vec(b) + vec(c) = 0 and |vec(a)|=10, |vec(b)|=6 and |vec(c) |=14 . What is the angle between vec(a) and vec(b) ?

Let vec a , vec b , vec c are three vectors , such that vec a + vec b + vec c = vec 0 .If , |vec a|=3 , |vec b|=4 and | vec c|=5 , then the value of, |vec a+vec b|^(2) + |vec b-vec c|^(2) + |vec c+vec a|^(2) , equal to :

[vec a + vec b, vec b + vec c, vec c + vec a] = 2 [vec a, vec b, vec c]

XII BOARDS PREVIOUS YEAR-BOARD PAPER SOLUTIONS-All Questions
  1. Prove that 2tan^(-1)(1/5)+sec^(-1)((5sqrt(2))/7)+2tan^(-1)(1/8)=pi/4...

    Text Solution

    |

  2. Prove that, for any three vectors vec a , vec b , vec c [ vec a+ v...

    Text Solution

    |

  3. Vector vec a , vec b and vec c are such that vec a+ vec b+ vec c...

    Text Solution

    |

  4. The sum of the perimeters of a circle and a square is k , where k is s...

    Text Solution

    |

  5. Find the direction cosines of the line (x+2)/2=(2y-7)/6=(5-z)/6dot Als...

    Text Solution

    |

  6. Solve for x: 2tan^(-1)(cosx)=tan^(-1)(2cos e cx)

    Text Solution

    |

  7. Using differentials, find the approximate value of (3. 968)^(3/2)

    Text Solution

    |

  8. Write the derivative of sinx w.r.t. cosxdot

    Text Solution

    |

  9. Find : int(sin^2x-cos^2x)/(sin^2xcos^2x)dx

    Text Solution

    |

  10. Write a vector in the direction of the vector hat i-2 hat j+2 hat k t...

    Text Solution

    |

  11. Write the distance of a point P(a ,b ,c) from x-axis.

    Text Solution

    |

  12. If, [xdoty4z+6x+y]=[8w0 6], write the value of (x+y+z)dot

    Text Solution

    |

  13. Write the principal value of cos^(-1)[cos(680^@)]

    Text Solution

    |

  14. Let R be the equivalence relation in the set A={0,\ 1,\ 2,\ 3,\ 4,\ 5}...

    Text Solution

    |

  15. Write a x2x matrix which is both symmetric and skew-symmetric.

    Text Solution

    |

  16. Write the projection of the vector 2 hat i- hat j+ hat k on the vector...

    Text Solution

    |

  17. int[x+3]/sqrt[5-4x-x^2].dx

    Text Solution

    |

  18. Evaluate : int0^(pi/2)x^2sinxdx

    Text Solution

    |

  19. If the three vectors veca, vecb , vecc are coplanar, prove that the ve...

    Text Solution

    |

  20. If vec a=2 hat i-3 hat j+ hat k , hat b=- hat i+ hat k , vec c=2 hat ...

    Text Solution

    |