The points \(A\), \(B\) and \(C\) have coordinates \(A(5, 3, 4)\), \(B(8, -1, 9)\) and \(C(12, 5, 10)\)
The points \(A\), \(B\) and \(C\) lie in the plane \(\Pi\)
- Find a vector that is normal to the plane \(\Pi\) [3 marks]
- Find a Cartesian equation of the plane \(\Pi\) [2 marks]