Motion in a plane

ɵ
i
and ɵ
j are unit vectors along x- and y- axis respectively. What is the magnitude
and direction of the vectors ɵ ɵ
i j + , and ɵ ɵ
i j − ? What are the components of a vector
A= 2 ɵ ɵ
i j + 3 along the directions of ɵ ɵ
i j + and ɵ ɵ
i j − ? [You may use graphical method]