Question

find the angle between vector A and B if A.B= A*B​

Answer 1

Answer:

The angle between vectors a and b if a.b=a×b: Substitute in the given equation we get AB Sin(x) = AB Cos(x), Now Sin(x)= Cos(x). Finally we get Tan(x)= 1

Answer 2

Explanation:

AB COS THETA = AB SIN THETA

COS THETA / SIN THETA = 1

COT THETA = COT PIE /4

THETA = PIE/4