Question

If  are unit vectors such that  and  then 

Solution

Correct option is

 

Let θ be the angle between   

    

Now,   

        

  

SIMILAR QUESTIONS

Q1

 are three non-zero vectors which are pair wise non-collinear. If  is collinear with  is collinear with  is:    

Q2

 unit vectors such that , then the value of  

Q3

If  are unit vectors, then the greatest value of

Q4

If the unit vectors  are inclined at an angle 2θ such that  then θ lies in the interval 

Q5

Let  be two unit vectors and α be the angle between them, then  is a unit vector, if α =

Q6

If  then the angle between  

Q7

Let  are two vectors inclined at an angle of 60o. If  then the angle between   

Q8

If  are unit vectors such that  is also a unit vector, then the angle between , is

Q9

If  are unit vectors such that 

Q10

If  are unit vectors inclined to x-axis at angles 30o and 120o, then  equals