$1\mathrm{.}1$: Choose the correct equilibrium equation ${\displaystyle \underset{?}{\overset{?}{}}}{F}_y=0(3$ points$)$:

a$)-$Fcos$60-\frac{3}{5}P+200sin105=0$

b$)-$Fsin$60+\frac{4}{5}P+200cos105=0$

c$)-$Fsin$60+\frac{3}{5}P+200sin105=0$

d$)-$Fcos$60-\frac{9}{25}P+200sin105=0$

e$)-$Fsin$60-\frac{3}{5}P+200sin105=0$