Question 1173566
<b>v</b> = {{{ 7cos(45^o)}}} <b>i</b> + {{{7sin(45^o)}}}<b>j</b>  
= (exactly) {{{ 7*sqrt(2)/2 }}} <b>i</b> + {{{7*sqrt(2)/2}}}<b>j</b><br>
= (approximately) {{{ 4.9497 }}} <b>i</b> + {{{4.9497}}}<b>j</b>  

<br>
The {{{green(green)}}} part shows the x (i) component, while the {{{blue(blue)}}} part shows the y (j) component:
{{{ drawing(400,400,-10,10,-10,10, grid(0),
            line(0,0,4.9497,4.9497),
         green(line(0,0,4.9497,0)),
          blue(line(0,0,0,4.9497)),
        locate(3.7,4.9, v)

) }}}