Побудувати кут а , якщо [tex]sin \: a = - \frac{2}{5} [/tex]. Created by katiahanin1. geometriya-ru

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katiahanin1 @katiahanin1

July 2022 1 11 Report

Побудувати кут а , якщо
[tex]sin \: a = - \frac{2}{5} [/tex]

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Miroslava227

Ответ:

$\sin( \alpha ) = - \frac{2}{5} \\ \sin( \alpha ) = - 0.4 \\ \alpha = {( - 1)}^{n + 1} \arcsin(0.4) + \pi \: n \\ \alpha_1 =\pi+ \arcsin(0.4) \\ \alpha_2 = 2\pi - \arcsin(0.4)$

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