Question

The unit vector along i^+j^ is​

Answer 1

Answer:

unit vector of i^+j^ = $\frac{i+j}{| i+j | }$

                       |i +j| = $\sqrt{i^2+j^2+2ijcos90}$

                               =   $\sqrt{1+1\\}$

                               =  $\sqrt{2\\}$  

    so unit vector along i^+j^ is $\frac{i+j}{\sqrt{2} }$