Известно,что sin a =0,6 и 90градусов Найдите tg(180град.+a). Created by sobakazabiyaka. algebra-ru

Известно,что sin a =0,6 и 90градусов Найдите tg(180град.+a)...

sobakazabiyaka @sobakazabiyaka

June 2022 1 23 Report

Известно,что
sin a =0,6 и 90градусов Найдите tg(180град.+a)

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Verified answer

Tg(180° + α) = tgα
$Cos \alpha = - \sqrt{1-Sin ^{2} \alpha }= - \sqrt{1-0,6 ^{2} } =- \sqrt{1-0,36}=- \sqrt{0,64}=$ $-0,8$

$tg \alpha = \frac{Sin \alpha }{Cos \alpha }= \frac{0,6}{-0,8}=- 0,75$

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