!!!СРОЧНО!!!Преобразуй выражение sin55°+sin34°.. Created by justkraken. algebra-ru

!!!СРОЧНО!!!Преобразуй выражение sin55°+sin34°...

justkraken @justkraken

November 2021 1 9 Report

!!!СРОЧНО!!!
Преобразуй выражение sin55°+sin34°.

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Miroslava227

Ответ:

$\sin(55^{\circ} ) + \sin(34^{\circ}) = 2 \sin( \frac{55^{\circ} + 34^{\circ}}{2} ) \cos( \frac{55^{\circ} - 34^{\circ}}{2} ) = \\ = 2 \sin(44.5^{\circ}) \cos(10.5^{\circ})$

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