Home
О нас
Products
Services
Регистрация
Войти
Поиск
sasha514406
@sasha514406
July 2022
1
7
Report
Тригонометрия, уравнения
Please enter comments
Please enter your name.
Please enter the correct email address.
Agree to
terms of service
You must agree before submitting.
Send
Answers & Comments
sharadi
Verified answer
1) Cosα= -3/5, α∈IIIчетв.
Нaйти Sinα и tgα
решение:
Sin²α + Cos²α = 1
Sin²α = 1 - Cos²α = 1 - 9/25 = 16/25
Sinα = -4/5
tgα = -4/5: (-3/5) = 4/3
2) Sin(π-α) = Sinα
Cos²(π +α) = Cos²α
Cos(3π/2 - α) = -Sinα
наш пример:
Sinα + Cos²α/Sinα = (Sin²α + Cos²α)/Sinα = 1/Sinα
1 votes
Thanks 1
sharadi
В 1-м синусе, наверное, всё-таки не "х" стоит, а "α"...
More Questions From This User
See All
sasha514406
July 2022 | 0 Ответы
proizvodnaya funkciiuravnenie kasatelnoj
Answer
sasha514406
November 2021 | 0 Ответы
napishite kineticheskie uravneniya sleduyushih reakcij zadanie 613 esli eshe obyasn
Answer
sasha514406
October 2021 | 0 Ответы
zapisat chisla v vide desyatichnoj drobi pozhalujsta s obyasneniem
Answer
sasha514406
October 2021 | 0 Ответы
vypishite mnozhitel iz pod znaka kornya pozhalujsta s obyasneniem
Answer
sasha514406
August 2021 | 0 Ответы
scary...
Answer
рекомендуемые вопросы
rarrrrrrrr
August 2022 | 0 Ответы
o chem dolzhny pozabotitsya v pervuyu ochered vzroslye pri organizacionnom vyvoze n
danilarsentev
August 2022 | 0 Ответы
est dva stanka na kotoryh vypuskayut odinakovye zapchasti odin proizvodit a zapcha
myachina8
August 2022 | 0 Ответы
najti po grafiku otnoshenie v3v1 v otvetah napisano 9 no nuzhno reshenie
ydpmn7cn6w
August 2022 | 0 Ответы
Choose the correct preposition: 1.I am fond (out,of,from) literature. 2.where ar...
millermilena658
August 2022 | 0 Ответы
opredelite kak sozdavalas i kto sozdaval arabskoe gosudarstvo v kracii
MrZooM222
August 2022 | 0 Ответы
ch ajtmanov v rasskaze krasnoe yabloko ispolzuet metod rasskaz v rasskaze opi
timobila47
August 2022 | 0 Ответы
kakovo bylo naznachenie kazhdoj iz chastej vizantijskogo hrama pomogite pozhalujsta
ivanyyaremkiv
August 2022 | 0 Ответы
moment. 6....
pozhalujsta8b98a56c0152a07b8f4cbcd89aa2f01e 97513
sarvinozwakirjanova
August 2022 | 0 Ответы
pomogite pozhalusto pzha519d7eb8246a08ab0df06cc59e9dedb 6631
×
Report "Тригонометрия, уравнения..."
Your name
Email
Reason
-Select Reason-
Pornographic
Defamatory
Illegal/Unlawful
Spam
Other Terms Of Service Violation
File a copyright complaint
Description
Helpful Links
О нас
Политика конфиденциальности
Правила и условия
Copyright
Контакты
Helpful Social
Get monthly updates
Submit
Copyright © 2024 SCHOLAR.TIPS - All rights reserved.
Answers & Comments
Verified answer
1) Cosα= -3/5, α∈IIIчетв.Нaйти Sinα и tgα
решение:
Sin²α + Cos²α = 1
Sin²α = 1 - Cos²α = 1 - 9/25 = 16/25
Sinα = -4/5
tgα = -4/5: (-3/5) = 4/3
2) Sin(π-α) = Sinα
Cos²(π +α) = Cos²α
Cos(3π/2 - α) = -Sinα
наш пример:
Sinα + Cos²α/Sinα = (Sin²α + Cos²α)/Sinα = 1/Sinα