Home
О нас
Products
Services
Регистрация
Войти
Поиск
nin1977
@nin1977
November 2021
1
10
Report
!!!!!упростите выражение 9 класс
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
zinaidazina
1)
cos(5π/2 + α) = - sin α
cos(3π - α) = - cos α
ctg(3π/2 + α) = - tg α
ctg(5π - α) = - ctg α
2) cos²(5π/2 + α) + cos²(3π - α) + 2ctg(3π/2 + α)ctg(5π - α) =
= (- sin α)² + (- cosα)² + 2·(-tgα)·(-ctgα) =
= sin²α + cos²α + 2·1 = 1 + 2 = 3
2 votes
Thanks 1
More Questions From This User
See All
nin1977
August 2022 | 0 Ответы
3rasschitajte molyarnye massy sleduyushih veshestv na foto
Answer
nin1977
August 2022 | 0 Ответы
iz predlozhennyh veshestv i smesej vypishite otdelno chistye veshestva i smesi vared61f4d7bde27e0baa1e84c986c6a5f89 95403
Answer
nin1977
August 2022 | 0 Ответы
iz predlozhennyh veshestv i smesej vypishite otdelno chistye veshestva i smesi vare
Answer
nin1977
August 2022 | 0 Ответы
s 2 otvet vrode dolzhen byt 185
Answer
nin1977
August 2022 | 0 Ответы
pozhalujsta sdelajte nomer 3 na fotozapisat vyrazhenie po pravilam yazyka paska
Answer
nin1977
July 2022 | 0 Ответы
s otvet dolzhen vrode 185 poluchitsya
Answer
nin1977
July 2022 | 0 Ответы
k rastvoru soderzhashemu 12 g hlorida bariya dobavili rastvor sernoj kisloty najdi
Answer
nin1977
July 2022 | 0 Ответы
hi gthi2o gthioh dalshe prodolzhit
Answer
nin1977
July 2022 | 0 Ответы
sdelajte predlozheniya so slovami kotorye na foto
Answer
nin1977
July 2022 | 0 Ответы
proshuperevedite etot tekst na russkij 3 tapsyrma na fotke
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 "!!!!!упростите выражение 9 класс..."
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
cos(5π/2 + α) = - sin α
cos(3π - α) = - cos α
ctg(3π/2 + α) = - tg α
ctg(5π - α) = - ctg α
2) cos²(5π/2 + α) + cos²(3π - α) + 2ctg(3π/2 + α)ctg(5π - α) =
= (- sin α)² + (- cosα)² + 2·(-tgα)·(-ctgα) =
= sin²α + cos²α + 2·1 = 1 + 2 = 3