If A=B then the angle b/w (A+B)&(AxB) is

Let us suppose A and B are two vectors in the plane of this screen,

then A+B is a vector which also lies in this plane of the sceen.

And AxB is the vector resulting from the cross product of A and B, so the direction of AxB is perpendicular to both A and B and the plane containg them, ie , this screen.

Hence A+B is in the plane of this screen and AxB is perpendicular to it. 

So the angle between them is 90 degrees.

 

Regards

Toppers Team