Question

I already answered part a and b, need help with part c and d.

Answer 1

a.

b.

c.

`\begin{gathered} r^2=400^2+300^2 \\ r^2=160000+90000 \\ r=\sqrt[]{250000} \\ r=\text{ }500\text{ N} \end{gathered}`

d.

`\begin{gathered} \tan x=(400)/(300) \\ x=\tan ^(-1)1.33333333333 \\ x=53.1301023473 \\ x\approx53^(\circ) \end{gathered}`