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Đáp án+Giải thích các bước giải:
a.a.
Ta có: ˆyOn<ˆxOyyOn^<xOy^
nên OnOn nằm giữa hai tia OxOx và OyOy
suy ra ˆxOy=ˆyOn+ˆxOnxOy^=yOn^+xOn^
⇒ˆxOn=ˆxOy−ˆyOn=120o−90o=30o⇒xOn^=xOy^-yOn^=120o-90o=30o
Vậy ˆxOn=ˆyOm=30oxOn^=yOm^=30o
b.b.
Vì OtOt là phân giác của ˆxOyxOy^
nên ˆxOt=ˆyOt=12ˆxOy=60oxOt^=yOt^=12xOy^=60o
Ta có:
ˆnOt=ˆxOt−ˆxOn=60o−30o=30onOt^=xOt^-xOn^=60o-30o=30o
ˆmOt=ˆyOt−ˆyOm=60o−30o=30omOt^=yOt^-yOm^=60o-30o=30o
Do đó ˆnOt=ˆmOt=12ˆmOn =30onOt^=mOt^=12mOn^ =30o
nên OtOt là tia phân giác của ˆmOn
1. Do you often eat2. is putting3. drink4. washes5. will not pass6. has - is coughing7. exercising8. sneezing9. do you do10. eating
tick cho mình nhé
nghĩa gốc
-9 hoặc 9
Good morning, everyone! I’m Phạm Hoài Thương. I’m 20 years old and I’m from Nha Trang. I’m a junior at University of Journalism and Communication. My major is Digital Communication. I think I’m a dynamic, hard-working and creative student. During my first and second year at university, I challenged myself in many fields such as digital marketing, journalism, etc. Finally, I have found my great passion for content writing. I have always wanted to become a content writer so that I can use my creativity to write captivating contents for my company and readers. That’s what I would like to talk about myself. Thanks for listening!
hưng yên
1 will go/stops
2. will stay/answers
3, catch
4. will be/count
5. will/come/leave
6. is
7. go
8, will get
9. will help - is10. will give - see11. will explain12. had finished - got13. will look14. will move15. know - will give
1.takes
2.will feel
3.will be
4.won't be
5.didn't take
6.am not going to do
7.won't go
8.won't pass
9.won't take