sin П/8 × 2cosП/8 Помогите!. Created by natalyaa2. matematika-ru

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sin П/8 × 2cosП/8 Помогите!

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Алмаз11 $2sinx*cosx = sin2x$ ⇒⇒⇒⇒⇒

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

Ответ: $\frac{ \sqrt{2} }{2}$

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natalyaa2 о.о спасибо конечно, попытаюсь разобрать)

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