Question

1) 2sinx + sin2x=0

2) tgx-3ctgx=0

 

Answer 1

tgx-3/tgx=0

tg^2x=3

tgx=+-sqrt(3)

x=+-П/3+Пk

2sinx(1+cosx)=0

x=Пk

x=П(2k+1)