Найдите 3cosα,если sinα=-(2√2)/3 и α ϵ (3π/2;2π).. Created by lianadyusmetova. algebra-ru

2;2π)...

lianadyusmetova @lianadyusmetova

July 2022 1 9 Report

Найдите 3cosα,если sinα=-(2√2)/3 и α ϵ (3π/2;2π).

Answers & Comments

lara164

Verified answer

Sinα = -(2√2)/3 ⇒ sin²α = (-(2√2)/3)² = 8/9
sin²α + cos²α = 1 ⇒ cos² α = 1-sin²α ⇒cos²α = 1-8/9 = 1/9
cosα = √1/9 = 1/3 ( cosα = - 1/3 -не подходит для α ϵ (3π/2;2π))
3 cosα = 3*1/3 = 1
ответ: 1

4 votes Thanks 5

zadachakakoe davlenie proizvodit stolb rtuti vysotoj 76 sm varianty otvetov 101k

Answer

lianadyusmetova August 2022 | 0 Ответы

40 ballov srochnoad28854d86f47da976556d9680778b78 3955

Answer

lianadyusmetova August 2022 | 0 Ответы

5025 ballov pomogite pozhalujsta sdelat laboratornuyu po biologii

Answer

lianadyusmetova August 2022 | 0 Ответы

100 ballov za sochinenie na temu kogo ya schitayu samym interesnym uchenikom v klas

Answer

lianadyusmetova July 2022 | 0 Ответы

vyvedi na ekran bolshee iz dvuh dannyh chisel zapishi programmu na yazyke paskal266649ba83944c632a66cff8adf40e2c 95080

Answer

lianadyusmetova July 2022 | 0 Ответы

reshiteddd8316a2f8cebb1bddbfc325e47d3cd 90947

Answer

Answers & Comments

Verified answer

ma0ad1f0014691f5fa471bf464a30788e 58728

otvet s

zloj uchitel po muzyke zastavil uchenikov 3 klassa spet 416 pesen za 8 minut za

opredelite obem oksida sery 4 pri vzaimodejstvii kotorogo s 200 g 2 nogo rastv

zadachakakoe davlenie proizvodit stolb rtuti vysotoj 76 sm varianty otvetov 101k

40 ballov srochnoad28854d86f47da976556d9680778b78 3955

5025 ballov pomogite pozhalujsta sdelat laboratornuyu po biologii

100 ballov za sochinenie na temu kogo ya schitayu samym interesnym uchenikom v klas

vyvedi na ekran bolshee iz dvuh dannyh chisel zapishi programmu na yazyke paskal266649ba83944c632a66cff8adf40e2c 95080

reshiteddd8316a2f8cebb1bddbfc325e47d3cd 90947

рекомендуемые вопросы

Helpful Links

Helpful Social