If `bar(a)` and `bar(b)` are two non-zero vectors and `theta` is angle between then,the `cos theta` is

bar(a) and bar(b) are two unit vectors and theta be the angle between them then sin theta/2 : (A) |bar(a)-bar(b)| (B) |bar(a)+bar(b)| (C) (1)/(2)|bar(a)-bar(b)| (D) (1)/(2)|bar(a)+bar(b)|

If vec a and vec b are two unit vectors and theta be the angle between them,then sin((theta)/(2))=

Suppose a and b are two non-zero vectors and angle between a and b is theta, " where "0 lt theta lt pi//2 . If abs(a times b)=abs(a*b)," then "pi//theta= _______

Let hat(a), hat(b) be two unit vectors and theta be the angle between them. What is cos ((theta)/(2)) equal to ?

If a and b are unit vectors and theta is the angle between them then a-b will be a unit vector if

Let hat(a), hat(b) be two unit vectors and 0 be the angle between them. What is cos ((theta)/(2)) equal to ?

Let hat(a), hat(b) be two unit vectors and theta be the angle between them. What is sin ((theta)/(2)) equal to ?

Given that bar(a) and bar(b) are two unit vectors such that angle between bar(a) and bar(b) is cos ^(-1)((1)/(4)). If bar(c) be a vector in the plane of bar(a) and bar(b), such that |vec c|=4,vec c xxvec b=2vec a xxvec b and vec c=lambdavec a+mubar(b) then,find

The angle theta between two non-zero vectors bar(a) and bar(b) is given by cos theta =….