Home
Class 12
MATHS
Let a , b and c be three unit vector...

Let a , b and c be three unit vectors out of which vectors b and c are non -parallel. If `alpha " and " beta` are the angles which vector a makes with vectors b and c respectively and `axx (b xx c) = (1)/(2) b,` Then `|alpha -beta|` is equal to

A

`30^(@)`

B

`45^(@)`

C

`90^(@)`

D

`60^(@)`

Text Solution

Verified by Experts

The correct Answer is:
A
Promotional Banner

Similar Questions

Explore conceptually related problems

If a,b,c be three units vectors such that a xx(b xx c)=((1)/(2))b;b and c being non- parallel then

Let a, b and c be three unit vectors such that atimes(btimesc)=(sqrt(3))/(2)(b+c) . If b is not parallel to c , then the angle between a and b is

Let vec a,vec b,vec c be three unit vectors such that |vec a+vec b+vec c|=1 and vec a is perpendicular to vec b. if vec c makes angle alpha and beta with vec a and vec b respectively,then cos alpha+cos beta=

If a,b and c are three unit vectors equally inclined to each other at angle theta . Then, angle between a and the plane of b and c is

If a, b and c are three unit vectors satisfying 2a times(a timesb)+c=0 then the acute angle between a and b is

If a, b, c are unit vectors such that a-b+c=0 then c*a is equal to