Home
О нас
Products
Services
Регистрация
Войти
Поиск
Diman1703
@Diman1703
July 2022
1
2
Report
Людии помогите срочно 10-11 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
sedinalana
Verified answer
1
sin²t/(1+cost)+sint*ctgt=(1-cos²t)/(1+cost)+sint*cost/sint=
=(1-cost)(1+cost)/(1+cost+sint=1-cost+cost=1
1=1
2
sint=-15/17
cost=-√(1-sin²t)=-√(1-225/289)=-√(64/289)=-8/17
tgt=sint/cost=-15/17:(-8/17)=15/17*17/8=15/8
ctgt=1/tgt=1:15/8=8/15
1
a)(cos(720+60)-ctg(540-45))*sin(180+45)=(cos60-ctg(-45))*(-sin45)=
=(1/2+1)*(-√2/2=-3√2/4
b)sin(-23π/4)*tg19π/6=-sin(6π-π/4)*tg(3π+π/6)=-sin(-π/4)*tgπ/6=
=√2/2*√3/3=√6/6
2
2cos(3π/2+a)/sin(π+a)=2sina/(-sina)=-1
1 votes
Thanks 1
More Questions From This User
See All
Diman1703
July 2022 | 0 Ответы
pomogite postroit secheniyaac2fde615e929f1f7fa68e5a5dd60b4e 13835
Answer
Diman1703
July 2022 | 0 Ответы
zapishite vse 3 h znachnye chisla sostoyashie iz 0 2 4 6 povtoryatsya ne mogut
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 "Людии помогите срочно 10-11 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
Verified answer
1sin²t/(1+cost)+sint*ctgt=(1-cos²t)/(1+cost)+sint*cost/sint=
=(1-cost)(1+cost)/(1+cost+sint=1-cost+cost=1
1=1
2
sint=-15/17
cost=-√(1-sin²t)=-√(1-225/289)=-√(64/289)=-8/17
tgt=sint/cost=-15/17:(-8/17)=15/17*17/8=15/8
ctgt=1/tgt=1:15/8=8/15
1
a)(cos(720+60)-ctg(540-45))*sin(180+45)=(cos60-ctg(-45))*(-sin45)=
=(1/2+1)*(-√2/2=-3√2/4
b)sin(-23π/4)*tg19π/6=-sin(6π-π/4)*tg(3π+π/6)=-sin(-π/4)*tgπ/6=
=√2/2*√3/3=√6/6
2
2cos(3π/2+a)/sin(π+a)=2sina/(-sina)=-1