Question

If |Ā|=3units ,|B|= 4units and|Ā×B|=6units,then the angle between ĀandB is​

Answer 1

Explanation:

|A×B|=|A| |B| sin thetha

given that

|A| =3units,|B|= 4units

|A×B|= 6units

6 = 3×4 sin thetha

6 = 12 sin thetha

6/12= sin thetha

1/2 = sinthetha

sin30°= sinthetha

therefore,

the angle between the vectors A and B= 30°