Упростите выражения (sin47°cos357° - sin223°sin3°) / (sin70°-sin10°). Created by dcheremnyx2011. algebra-ru

(sin70°-sin10°)...

dcheremnyx2011 @dcheremnyx2011

July 2022 1 8 Report

Упростите выражения (sin47°cos357° - sin223°sin3°) / (sin70°-sin10°)

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Матов

Verified answer

$sin47*cos357-sin223*sin3\\\\
cos(357)=cos(360-3)=cos3\\\\
sin223=-cos47\\\\
sin47*cos3+cos47*sin3=sin(47+3)=sin50\\\\
sin70-sin10=2sin30*cos40=cos40=sin50\\\\
 \frac{sin50}{sin50}=1
$
Ответ 1

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Answers & Comments

Verified answer

morfologicheskij razbor pokidaya

6 sin2sinx2 reshit uravnenie

pochemu process opustynivaniya aktivno idet v razvivayushihsya stranah dazhe esli kli

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