Two sides of a triangle are represented by vectors 3i + 4j and 5i + 7j + k. Based on the data given, choose the options which are correct:
1
The third side of the triangle is -8î - 11ĵ - k̂
2
The third side of the triangle is -î - 11ĵ - 8k̂
3
The area of the triangle formed is \( {\sqrt {26}\over 2}\)
4
The area of the triangle formed is \(\sqrt{ \frac{26}{2}}\)