Question

sinxcos2x+cosxsin2x>1/2​

Answer 1

Ответ:

$\sin(x + 2x) = \frac{1}{2}$

$\sin(3x) = \frac{1}{2}$

$3x = ( - 1)^{n} \frac{\pi}{6} + \pi \times n$

$x = { (- 1)}^{n} \frac{\pi}{18} + \frac{\pi \times n}{3}$