Question

sin П/8 × 2cosП/8 Помогите!

Answer 1

$2sinx*cosx = sin2x$  ⇒⇒⇒⇒⇒

$Sin frac{P}{8} *2 cos frac{P}{8} = 2sin frac{P}{8} *cos frac{P}{8} = sin2 frac{P}{8} = sin frac{P}{4} = frac{ sqrt{2} }{2}$

Ответ: $frac{ sqrt{2} }{2}$