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July 2022 1 8 Report

найдите значения выражений

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Universalka

Verified answer

$2)\frac{2Cos(-2\pi-\beta)+Sin(-\frac{\pi }{2}+\beta)}{2Cos(\beta+\pi)}=\frac{2Cos(2\pi+\beta)-Sin(\frac{\pi}{2}-\beta)}{2Cos(\pi+\beta)}=\frac{2Cos\beta-Cos\beta}{-2Cos\beta}=-\frac{Cos\beta}{2Cos\beta}=-\frac{1}{2}=-0,5$

$3)-15Cos(\frac{7\pi }{2}-\alpha)=-15Cos[4\pi-(\frac{\pi }{2}+\alpha)]=-15Cos(\frac{\pi }{2}+\alpha )=-15*(-Sin\alpha)=15Sin\alpha\\\\1,5\pi$

$4)tg(\alpha-\frac{\pi }{2})=-tg(\frac{\pi }{2}-\alpha)=-Ctg\alpha\\\\-Ctg\alpha=-\frac{1}{tg\alpha}=-\frac{1}{0,04}=-25$

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Answers & Comments

Verified answer

privesti po 1 primeru slitnogo i razdelnogo napisaniya sleduyushih slov zato t

kakoe telo obrazuetsya esli ravnostoronnij treugolnik vrashat vokrug vysoty 1

1 raspolozhite kochevye plemena v tom poryadke v kotorom oni poyavlyalis v vostochn9aa32aa9577433dd0f8f83630a560ed2 32559

1 raspolozhite kochevye plemena v tom poryadke v kotorom oni poyavlyalis v vostochn

pomogite reshit949fd740d6704e32a6406d28a18afb35 13592

...

pomogite srochno dayu 40 ballov na osnovanii kakih faktov mozhno sudit ob obrazova

grammaticheskaya osnova v predlozheniichto zhe ya takoeb06b0315b5aa5265b7b7ba80a1e313f6 18707

sin28x2 verno li tozhdestvo cos28px1sin222pxd8f19f158a98463f948299d4254bbc18 61074

sin28x2 verno li tozhdestvo cos28px1sin222px

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