If `vec(a)` and `vec(b)` are unit vectors, and `theta` is the angle between them, then `|vec(a)-vec(b)|` =

If vec(a) and vec(b) are the unit vectors and theta is the angle between them, then vec(a) + vec(b) is a unit vector if

If vec a and vec b are unit vectors and theta is the angle between them, then |vec a + vec b| =

If vec(u) and vec(v) are unit vectors and theta is the actue angle between them, then 2vec(u) xx 3vec(v) is a unit vector for

If vec a and vec b are two unit vectors and theta is the angle between them, then |vec a - vec b| is equal to ______________

Let vec(a) and vec(b) be two unit vectors and theta is the angle between them. Then vec(a)+vec(b) is a unit vector if ……….

Let vec(a) and vec(b) be two unit vectors and theta is the angle between them. Then vec(a)+vec(b) is a unit vector if :

If vec a and vec b are unit vectors and theta is the angle between them,then prove that cos[(theta)/(2)]=(1)/(2)|vec a+vec b|

If vec(a) and vec(b) are unit vectors and theta is the angle between them, then what is sin^(2)((theta)/(2)) equal to?

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