calculate the area of a parallelogram by vectors a=3i+2j. and b=-3i+7j. [the area is given by modulus of a cross b.since area is a scalar product why can”t we use a.b?]
calculate the area of a parallelogram by vectors a=3i+2j. and b=-3i+7j. [the area is given by modulus of a cross b.since area is a scalar product why can”t we use a.b?]










