Question

What is the cross product of `<5, 2 ,5 >` and `<4 ,7 ,3 >`?

Answer 1

`A X B=-29 hat i+5 hat j+27 hat k`

Explanation:

`A X B=hat i(2*3-5*7)-hat j(5*3-5*4)+hat k(5*7-2*4)`

`A X B=hat i(6-35)-hat j(15-20)+hat k(35-8)`

`A X B=-29 hat i+5 hat j+27 hat k`