Home
О нас
Products
Services
Регистрация
Войти
Поиск
Yerimalyshka
@Yerimalyshka
August 2021
1
13
Report
441 рассчитайте. 442 упростите выражение. Помогите плиз. Даю 20 баллов.
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
kmike21
Verified answer
Cos40cos20-sin40sin20=cos(40+20)=cos60=1/2
cos70cos40+sin70sin40=cos(70-30)=cos30=√3/2
cos5xcos2x+sin5xsin2x=cos(5x-2x)=cos3x
cos3xcosx-sin3xsinx=cos(3x+x)=cos4x
cosβsin5β-sinβcos5β=sin(5β-β)=sin4β
sin3αcos2α+sin2αcos3α=sin(3α+2α)=sin5α
0 votes
Thanks 0
More Questions From This User
See All
Yerimalyshka
August 2022 | 0 Ответы
9klass algebradayu 25ballov
Answer
Yerimalyshka
August 2022 | 0 Ответы
286 9klass srochno
Answer
Yerimalyshka
July 2022 | 0 Ответы
srochno aza tilia99d8574ee897a206d0d68a91ed7b7c3 2034
Answer
Yerimalyshka
July 2022 | 0 Ответы
v treugolnike avsav4smas6smcos a04cm vs
Answer
Yerimalyshka
December 2021 | 0 Ответы
nuzhno sochinenie na temu tradicij moej semj
Answer
Yerimalyshka
December 2021 | 0 Ответы
reshite uravnenie3klass 1 x279 2 x 20639 3x700890 4x21416 5x
Answer
Yerimalyshka
August 2021 | 0 Ответы
uprazhnenie 2 pomogite 3 klass
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 "441 рассчитайте. 442 упростите выражение. Помогите плиз. Даю 20 баллов..."
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 © 2025 SCHOLAR.TIPS - All rights reserved.
Answers & Comments
Verified answer
Cos40cos20-sin40sin20=cos(40+20)=cos60=1/2cos70cos40+sin70sin40=cos(70-30)=cos30=√3/2
cos5xcos2x+sin5xsin2x=cos(5x-2x)=cos3x
cos3xcosx-sin3xsinx=cos(3x+x)=cos4x
cosβsin5β-sinβcos5β=sin(5β-β)=sin4β
sin3αcos2α+sin2αcos3α=sin(3α+2α)=sin5α