Question

Is the vector sum of the unit vectors i and j a unit
vector ? If no, can you multiply this sum by a scalar
number to get a unit vector ?​

Answer 1

Answer:

a = 2+√3

_____________

1/a = 1/2+√3

By rationalization,

1/x = 2-√3

Now,

a²+1/a²

(2+√3)²+(2-√3)²

4+3+4√3 +4+3-4√3

4+3+4+3

14

I hope this will help you