Home
О нас
Products
Services
Регистрация
Войти
Поиск
HeartBeat1
@HeartBeat1
July 2022
1
7
Report
Ребята помогите плиз)
5sin2x+4sin(п/2+x)=4
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
nKrynka
5sin^2x+4sin(п/2+x)=4
5sin^2x + 4cosx = 4
5*(1 - cos^2x) + 4cosx - 4 = 0
5 - 5cos^2x + 4cosx - 4 = 0
5cos^2x - 4cosx - 1 =
D = 16 + 4*5*1 = 36
cosx = (4 -6)/10
cosx = - (1/5)
x1 = (+ -)arccos(-1/5) + 2
πk, k∈Z
cosx = (4 + 6)/10
cosx = 1
x2 = 2
πn, n∈Z
1 votes
Thanks 2
More Questions From This User
See All
HeartBeat1
August 2022 | 0 Ответы
programirovanie pomogite napisat programmy dlya vypolneniya sleduyushih zadani
Answer
HeartBeat1
July 2022 | 0 Ответы
postavte v sootvetstvie opredeleniya s nazvaniyami klassov uglevodorodovcikliches
Answer
HeartBeat1
July 2022 | 0 Ответы
pomogite pliz reshit zadachub1c21347028ae25fcdbe7c3fb65e380b 60765
Answer
HeartBeat1
July 2022 | 0 Ответы
pomogite reshit uravnenie po informatike
Answer
HeartBeat1
July 2022 | 0 Ответы
ukazhite naimenshee chetyrehznachnoe vosmerichnoe chislo dvoichnaya zapis kotorogo
Answer
HeartBeat1
July 2022 | 0 Ответы
avtomat poluchaet na vhod trehznachnoe chislo po etomu chislu stroitsya novoe chisloc9ff1242703a7fbc0e8dbe2f1085ef61 78862
Answer
HeartBeat1
July 2022 | 0 Ответы
najdite obem pravilnoj shestiugolnoj prizmy storony osnovaniya kotoroj ravny 6
Answer
HeartBeat1
July 2022 | 0 Ответы
semya kak socialnaya gruppa sostavte plan v sootvetstvii s kotorym mozhno os
Answer
HeartBeat1
April 2022 | 0 Ответы
dlya kodirovaniya nekotoroi posledovatelnosti sostoyashei iz bukv i k l m n
Answer
HeartBeat1
December 2021 | 0 Ответы
programirovanie paskal napishite programmu kotoraya vyvodit na ekran chisla ot
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 "2+x)=4..."
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
5sin^2x + 4cosx = 4
5*(1 - cos^2x) + 4cosx - 4 = 0
5 - 5cos^2x + 4cosx - 4 = 0
5cos^2x - 4cosx - 1 =
D = 16 + 4*5*1 = 36
cosx = (4 -6)/10
cosx = - (1/5)
x1 = (+ -)arccos(-1/5) + 2πk, k∈Z
cosx = (4 + 6)/10
cosx = 1
x2 = 2πn, n∈Z