2.Упростите выражение: (1-cos2)+sin2a/2 sin a. Created by zhamiliakhalidova31. algebra-ru

По основному тригонометрическому тождеству: , откуда .Ответ: 1.

2 sin a...

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2.Упростите выражение: (1-cos2)+sin2a/2 sin a

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Veronika724

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По основному тригонометрическому тождеству: $sin^2\alpha + \cos^2\alpha = 1$ , откуда $\sin^2\alpha = 1 - \cos^2\alpha$ .

$\dfrac{(1-\cos^2\alpha)+\sin^2\alpha}{2\sin^2\alpha} = \dfrac{\sin^2\alpha + \sin^2\alpha}{2\sin^2\alpha} = \dfrac{2\sin^2\alpha}{2\sin^2\alpha} = \boxed{\bf{1}}$

Ответ: 1.

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reshite neravenstvo h 7h5gt0 pomogi sdelayu luchshim otvetom

postrojte parabolu yah2 12h s esli tochka a 35 yavlyaetsya ee vershinoj

sravnite gumoralnyj i kletochnyj immunitet ukazav shodnye i otlichitelnye cherty

2najti znachenie a i b 3 reshite sistemu neravenstv reshish sdel

ukazhite sootvetstvuyushij vyvod dlya kazhdogo neravenstva obosnujte svoj otvet

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