Question

помогите! срочно!!!

tg2x * sin4x=0

Answer 1

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