The magnitude of the difference of vectors acting in opposite direction is A+B.
The magnitude of two vectors A and B which are at angle 900 is given by, .
If the magnitude of the two forces are 2 and 3 and the magnitude of their scalar product is 3, then find the angle between the vectors.
Here, A = 2; B = 3 and A. B = 3,
We know that,
A. B = AB cos
So, cos = = cos 45o.
That is = 45o, is the angle between the vectors.