If is a unit vector, then find in each of the following

(i)

(ii)

A unit vector makes angles and with and respectively and an acute angle θ with Find the angle θ and components of

If two vectors and are such that and then find the value of

Find and if

(i) and

(ii) and

(iii) and

Find if

(i) and

(ii) and

(iii) and