If | vec a|=5,| vec a- vec b|=8 and | ve...

If `| vec a|=5,| vec a- vec b|=8 and | vec a+ vec b|=10` , then find `| vec b|dot`

A

1

B

`sqrt(57)`

C

`3`

D

none of these

Text Solution

Verified by Experts

The correct Answer is:

B

Topper's Solved these Questions

PRODUCT OF VECTORS
ARIHANT MATHS|Exercise JEE Type Solved Examples: Passage Based Type Questions|3 Videos
PRODUCT OF VECTORS
ARIHANT MATHS|Exercise JEE Type Solved Examples: Match Type Questions|4 Videos
PROBABILITY
ARIHANT MATHS|Exercise Exercise (Questions Asked In Previous 13 Years Exam)|55 Videos
PROPERTIES AND SOLUTION OF TRIANGLES
ARIHANT MATHS|Exercise Exercise (Questions Asked In Previous 13 Years Exam)|21 Videos

Similar Questions

Explore conceptually related problems

If | vec a|=2,\ | vec b|=5\ a n d\ | vec axx vec b|=8 , find vec adot vec bdot

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

If vec a and vec b are two vectors such that |quad vec a|=2 , |quad vec b|=1 and vec a. vec b=1 , then find the value of (3 vec a - 5 vec b).(2 vec a+7 vec b) .

If |vec a|=8, |vec b|=3 and |vec axx vec b|=12 , then the value of vec a . vec b is

If ( vec axx vec b)^2+( vec a.vec b)^2=144 and | vec a|=4, then find the value of | vec b|dot

If (vec a+ vec b)*(vec a- vec b)=0 and |vec a|=5 , find |vec b| .

If vec aa n d vec b are two vectors such that | vec axx vec b|=2, then find the value of [ vec a vec b vec axx vec b]dot

If |vec a|=10, and |vec b|=2 and vec a* vec b =12 , find angle between the two vectors

ARIHANT MATHS-PRODUCT OF VECTORS-Exercise (Questions Asked In Previous 13 Years Exam)

If | vec a|=5,| vec a- vec b|=8 and | vec a+ vec b|=10 , then find | v...
Text Solution
|
Let O be the origin and let PQR be an arbitrary triangle. The point S ...
Text Solution
|
Let O be the origin and vec(OX) , vec(OY) , vec(OZ) be three unit vec...
Text Solution
|
Let O be the origin, and O X , O Y , O Z be three unit vectors ...
Text Solution
|
Let a, b and c be three unit vectors such that atimes(btimesc)=(sqrt(3...
Text Solution
|
Let vec a , vec b and vec c be three non-zero vectors such that no ...
Text Solution
|
If vec a , vec ba n d vec c are unit vectors satisfying | vec a- v...
Text Solution
|
The vector(s) which is/are coplanar with vectors hat i+ hat j+2 hat...
Text Solution
|
Let vec a= hat i+ hat j+ hat k , vec b= hat i- hat j+ hat ka n d vec ...
Text Solution
|
Two adjacent sides of a parallelogram A B C D are given by vec A B=...
Text Solution
|
Let P,Q R and S be the points on the plane with position vectors -2hat...
Text Solution
|
If aa n db are vectors in space given by vec a=( hat i-2 hat j)/(sq...
Text Solution
|
If veca,vecb,vecc and vecd are unit vectors such that (vecaxxvecb)*(...
Text Solution
|
The edges of a parallelopiped are of unit length and are parallel to ...
Text Solution
|
Let two non-collinear unit vectors veca and vecb form an acute angle. ...
Text Solution
|
Let the vectors PQ,OR,RS,ST,TU and UP represent the sides of a regular...
Text Solution
|
The number of distinct real values of lambda , for which the vectors...
Text Solution
|
If veca, vecb, vecc are unit vectors such that veca+vecb+vecc=0, find...
Text Solution
|
Let A be vector parallel to line of intersection of planes P1 and P2. ...
Text Solution
|
Let vec a= hat i+2 hat j+ hat k , vec b= hat i- hat j+ hat ka n d vec...
Text Solution
|
Find the 7th term of GP if the first term is 7 and common ratio is 2.
Text Solution
|