помогите пожалуйста!!. Created by milpops08. algebra-ru

помогите пожалуйста!!...

milpops08 @milpops08

October 2021 1 19 Report

помогите пожалуйста!!

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Miroslava227

Ответ:

$\sin(105^{\circ} ) - \sin(75^{\circ} ) = 2 \sin( \frac{105^{\circ} - 75^{\circ} }{2} ) \cos( \frac{105 ^{\circ} + 75^{\circ} }{2} ) = \\ = 2 \sin(15^{\circ} ) \cos(90^{\circ} ) = 0$

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