Mathematics: Express sin3theta in terms of sintheta

Express sin3theta in terms of sintheta

Ответ:

OojohnnyoO116

17.01.2022

$\sin3\theta=\sin(\theta+2\theta)=\sin\theta\cos2\theta+\cos\theta\sin2\theta$
$=\sin\theta(1-2\sin^2\theta)+2\cos^2\theta\sin\theta$
$=\sin\theta-2\sin^3\theta+2(1-\sin^2\theta)\sin\theta$
$=3\sin\theta-4\sin^3\theta$

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Ответ:

hannahbear3747

08.04.2021

Mathematics

Step-by-step explanation:

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