Question

The magnitude of scalar product of two vectors is 8 and that of vector product is 8√3. The angle
between them is
(A) 30°
(B) 60°
(C) 120°
(D) 150°
​

Answer 1

If the two vectors are A & B.

scalar product=|A•B|=ABCosx=8

vector product=|A×B|=ABSinx=8√3

ABSinx/ABCosx=8√3/8

Tanx=√3=Tan60°

x=60°