Question

For 2 vectors find the angle between them if their scalar product is equal to the vector

Answer 1

If cross product and dot product of any two vectors is same then :

The angle between the vectors is 45° .

Because:

Cos ø = ( A.B )/ |A| |B|

Sin ø =( A x B )/ |A| |B|

We know that A.B = A x B

Therefore, Cos ø= Sin ø

Cos ø = Cos(90-ø)

Ø = 90- Ø

2 Ø = 90

Ø = 45°.