Question

If  are two unit vectors such that , then the angle between , is 

Solution

Correct option is

2π/3

 

Let θ be the angle between unit vectors .  

Since  are unit vectors.   

SIMILAR QUESTIONS

Q1

Let  be vectors of equal magnitude such that the angle between  Then, the minimum value of the cos α + cos β + cos γ is

Q2

Let  be three vectors of equal magnitude such that the angle between each pair is  If   

Q3

If , then the value of  is equal to

Q4

Angle between vectors  are unit vectors satisfying 

Q5

The values of ‘a’ for which the points ABC with position vectors  respectively are the vertices of a right angled triangle with C = π/2 are 

Q6

The vectors  are the adjacent sides of a parallelogram. Then, the acute angle between its diagonals is

Q7

If  are two vectors such that  then angle between 

Q8

The values of x for which the angle between the vectors  is acute, and the angle between the vector  and the axis of ordinates is obtuse, are

Q9

The value of x for which the angle between  and  is obtuse and the angle between  and the z-axis is acute and less than π/6, are  

Q10

, then the angle between