Home
Class 12
MATHS
If hat a , hat b ,"and " hat c are unit...

If ` hat a , hat b ,"and " hat c` are unit vectors, then `| hat a+hat b|^2+| hat b- hat c|^2+| hat c- hat a|^2` does not exceed

Text Solution

AI Generated Solution

Promotional Banner

Topper's Solved these Questions

  • TRIGONOMETRIC RATIOS FOR COMPOUND, MULTIPLE, SUB-MULTIPLE ANGLES, AND TRANSFORMATION FORMULAS

    CENGAGE ENGLISH|Exercise Multiple Correct Answers Type|6 Videos
  • VECTORS TRIPLE PRODUCTS, RECIPROCAL SYSTEM OF VECTORS

    CENGAGE ENGLISH|Exercise DPP 2.4|20 Videos

Similar Questions

Explore conceptually related problems

If hat a ,\ hat b are unit vector such that \ hat a+ hat b is a unit vectors, write the value of | hat a- hat b|dot

If hat a , hat b ,a n d hat c are three unit vectors, such that hat a+ hat b+ hat c is also a unit vector and theta_1,theta_2a n dtheta_3 are angles between the vectors hat a , hat b ; hat b , hat ca n d hat c , hat a respectively, then among theta_1,theta_2,a n dtheta_3dot a. all are acute angles b. all are right angles c. at least one is obtuse angle d. none of these

If hat i ,\ hat j ,\ hat k\ are unit vectors, then hat idot hat j=1 b. hat idot hat i=1 c. hat ixx hat j=1 d. hat ixx( hat jxx hat k)=1

If hat aa n d hat b are unit vectors inclined at an angle theta , then prove that sintheta/2=1/2| hat a- hat b|dot

Let hat a , hat b , hatc be unit vectors such that hat a * hatb =hat a *hatc =0 and the angle between hat b and hat c be (pi)/(6) prove that hat a =+- 2 (hatb xx hat c )

Let hat a , hat b ,and hat c be the non-coplanar unit vectors. The angle between hat b and hat c is alpha , between hat c and hat a is beta and between hat a and hat b is gamma . If A( hat a cosalpha, 0),B( hat bcosbeta, 0) and C( hat c cosgamma, 0), then show that in triangle AB C , (|hat axx(hat bxx hat c)|)/(sinA)=(|hat bxx(hat cxx hat a)|)/(sinB)=(|hat cxx(hat axx hat b)|)/(sinC)

Write a unit vector in the direction of vec b=2 hat i+ hat j+2 hat kdot

If hat a\ a n d\ hat b are unit vectors inclined at an angle theta then prove that tantheta/2=(| hat a- hat b|)/(| hat a+ hat b|)

If hat a and hat b are unit vectors inclined at an angle theta , then prove that costheta/2=1/2| hat a+ hat b| tantheta/2=1/2|( hat a- hat b)/( hat a+ hat b)|

A vector of magnitude sqrt(2) coplanar with the vecrtor vec a= hat i+ hat j+2 hat ka n d vec b= hat i+2 hat j+ hat k , and perpendicular to the vector vec c= hat i+ hat j+ hat k , is a. - hat j+ hat k b. hat i- hat k c. hat i- hat j d. hat i- hat j

CENGAGE ENGLISH-VECTOR ALGEBRA-All Questions
  1. A ,B ,Ca n dD are four points such that vec A B=m(2 hat i-6 hat j+2 h...

    Text Solution

    |

  2. Let vec a= hat i+ hat j+ hat k , vec b= hat i- hat j+ hat ka n d vec ...

    Text Solution

    |

  3. If hat a , hat b ,"and " hat c are unit vectors, then | hat a+hat b|^...

    Text Solution

    |

  4. Which of the following expressions are meaningful? a. vec u.(vec vx...

    Text Solution

    |

  5. Find the value of lambda if the volume of a tetrashedron whose vert...

    Text Solution

    |

  6. Let vec a=2 hat i- hat j+ hat k , vec b= hat i+2 hat j= hat ka n d ve...

    Text Solution

    |

  7. If ( vec axx vec b)xx( vec cxx vec d)dot( vec axx vec d)=0 , then whic...

    Text Solution

    |

  8. Vector 1/3(2i-2j+k) is (A) a unit vector (B) makes an angle pi//3 ...

    Text Solution

    |

  9. Let vec u and vec v be unit vectors such that vec uxx vec v+ vec u= ...

    Text Solution

    |

  10. The scalarsla n dm such that l vec a+m vec b= vec c ,w h e r e vec a ,...

    Text Solution

    |

  11. If O A B C is a tetrahedron where O is the orogin anf A ,B ,a n dC are...

    Text Solution

    |

  12. If K is the length of any edge of a regular tetrahedron, then the dist...

    Text Solution

    |

  13. In triangle A B C , a point P is taken on A B such that A P//B P=1//3...

    Text Solution

    |

  14. Let A B C D be a parallelogram whose diagonals intersect at P and le...

    Text Solution

    |

  15. Find vec adot vec b when: vec a= hat j- hat k\ a n d\ vec b=2 hat i...

    Text Solution

    |

  16. if vec a=2 hat i- 3 hat j+hat k and vec b=hat i+2 hat j- 3hat k then...

    Text Solution

    |

  17. If vec a=x hat i+y hat j+z hat k , vec b=y hat i+z hat j+x hat k and v...

    Text Solution

    |

  18. Find | -> axx -> b|, if -> a=2 hat i+ hat j+3 hat k and -> b=3 hat i...

    Text Solution

    |

  19. find the value of x,y and z so that the vectors vec a= x hat i+ 2 hat ...

    Text Solution

    |

  20. The lengths of two opposite edges of a tetrahedron are a and b ; the...

    Text Solution

    |