5sinx tgx-sinx-5tgx+1=0

5sinxtgx-sinx-5tgx+1=0sinx(5tgx-1)-1(5tgx-1)=0(5tgx-1)(sinx-1)=05tgx-1=0    или           sinx-1=0tgx=1/5                        sinx=1x=arctg(1/5)+πk,k∈z    x=π/2+2πk,k∈z