Question

помогите! срочно!!!

tg2x * sin4x=0

Answer 1

$\frac{ \sin(2x) }{ \cos(2x) } \times 2 \sin(2x) \cos(2x) = 0 \\ 2 { \sin(2x) }^{2} = 0 \\ { \sin(2x) }^{2} = 0 \ \\ sin(2x) = 0 \\ 2x = {k\pi} \\ x = \frac{k\pi}{2}$