cos 2 альфа - sin^2 альфа / 2sin^2 альфа -cos^2 альфа. Created by Pan666. matematika-ru

2sin^2 альфа -cos^2 альфа...

Pan666 @Pan666

August 2022 1 1 Report

cos 2 альфа - sin^2 альфа / 2sin^2 альфа -cos^2 альфа

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ВладимирБ

Verified answer

(cos(2a)-(sin(a))^2)/(2(sin(a))^2-(cos(a))^2)=
=((cos(a)^2-(sin(a))^2-(sin(a))^2)/(2(sin(a))^2-(cos(a))^2)=
-((2(sin(a))^2-(cos(a))^2)/(2(sin(a))^2-(cos(a))^2)=-1

формула cos(2a)=(cos(a))^2-(sin(a))^2

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reka v bolotah shla i razvetvlyalas na neskolko rukavov v zaroslyah ivnyakavypolnd6963dc5b3b2d78b21a5da9b087fe9f8 96898

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Pan666 August 2022 | 0 Ответы

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reka v bolotah shla i razvetvlyalas na neskolko rukavov v zaroslyah ivnyakavypolnd6963dc5b3b2d78b21a5da9b087fe9f8 96898

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