Question 1135610
<pre>

     x-components         y-components
      166∙cos(7°)          166∙sin(7°)
      77∙cos(17°)          77∙sin(17°)
     218∙cos(33°)         218∙sin(33°)
--------------------------------------
sums: 421.2283112          161.4742419

magnitude of resultant = &#8730;<span style="text-decoration: overline">421.2283112²+161.4742419²</span> =
451.1177462 Newtons.

Angle of resultant, since it is in QI 
since both components are positive:

<font face="symbol">q</font> = tan<sup>-1</sup>(161.4742419/421.2283112) = 20.97389537°

Edwin</pre>