\(\vec{F1}+\vec{F2}\ =\ mg\left[\left(-0.347+.766\right)i+\left(1.969+0.462\right)\right]j\)
\(\vec{F1}\ +\vec{F2}\ =\left[0.419i+2.612j\right]\)
\(\tan^{-1}=\frac{2.612}{0.418}=80.90\)
\(1\vec{Fr}\ t=2.643\ mg\)
\(\tan^{-1\ }\left(\frac{\left(F_1y+F_2y\right)}{\left(F_1x+F_2x\right)}\right)\)
\(\vec{F1}+\vec{F2}\ =2\ Cos100+Cos100+2\ Sen100+Sen\ 100\)
\(\tan^{-1}\frac{2.954}{-0.520}=-80.01\)