Rút gọn bài sau về sin
U.sin(θ-2π/3)-U.sin(θ+2π/3)
How is th pronounced in the following words?Cirle the correct option.
1.that/θ/ð/ 6.earth/θ/ð
2.think/θ/ð 7.feather/θ/ð
3.other/θ/ð 8.three/θ/ð
4.weather/θ/ð 9.thieves/θ/ð
5.theatre/θ/ð 10.there/θ/ð
11.although/θ/ð 12.thank/θ/ð
13.brother/θ/ð 14.month/θ/ð
15.healthy/θ/ð 16.breath/θ/ð
17.breathe/θ/ð 18.them/θ/ð
19.thirsty/θ/ð 20.clothe/θ/ð
1. that chọn 2
2 think chọn 1
3 other chọn 2
4 weather chọn 2
6 earth chọn 2
5 theatre chọn 1
7 feather chọn 2
8 three chọn 1
9 thieves chọn 1
10 there chọn 2
11 although chọn 1
12 thank chọn 1
13 brother chọn 2
14 month chọn 2
15 healthy chọn 2
16 breath chọn 1
17 breathe chọn 1
18 them chọn 2
19 thirsty chọn 1
20 clothe chon 1
I. How is th pronounced in the following words? Circle the correct option
1. that /θ/ /ð/ 6. earth /θ/ /ð/ 11. although /θ/ /ð/ 16. breath /θ/ /ð/
2. think /θ/ /ð/ 7. feather /θ/ /ð/ 12. thank /θ/ /ð/ 17. breathe /θ/ /ð/
3. other /θ/ /ð/ 8. three /θ/ /ð/ 13. brother /θ/ /ð/ 18. them /θ/ /ð/
4. weather /θ/ /ð/ 9. thieves /θ/ /ð/ 14. month /θ/ /ð/ 19. thirsty /θ/ /ð/
5. theatre /θ/ /ð/ 10. there /θ/ /ð/ 15. healthy /θ/ /ð/ 20. clothe /θ/ /ð/
2,3, 6, 8,12, 16
Đó là các từ có các âm th
Chúc bạn học tốt!
1. /ð/ 6. /θ/ 11. /ð/ 16. /θ/
2. /θ/ 7. /ð/ 12. /θ/ 17. /ð/
3. /ð/ 8. /θ/ 13. /ð/ 18. /ð/
4. /ð/ 9. /θ/ 14. /θ/ 19. /θ/
5. /θ/ 10./ð/ 11./θ/ 20. /ð/
2,5,6,8,9,12,14,,15,16,17,19 đọc là TH
How is th pronounced in the following words? Circle the correct option
1. that /θ/ /ð/ 6. earth /θ/ /ð/ 11. although /θ/ /ð/ 16. breath /θ/ /ð/
2. think /θ/ /ð/ 7. feather /θ/ /ð/ 12. thank /θ/ /ð/ 17. breathe /θ/ /ð/
3. other /θ/ /ð/ 8. three /θ/ /ð/ 13. brother /θ/ /ð/ 18. them /θ/ /ð/
4. weather /θ/ /ð/ 9. thieves /θ/ /ð/ 14. month /θ/ /ð/ 19. thirsty /θ/ /ð/
5. theatre /θ/ /ð/ 10. there /θ/ /ð/ 15. healthy /θ/ /ð/ 20. clothe /θ/ /ð/
1. that /ð/ 6. earth /θ/ 11. although /ð/ 16. breath /θ/
2. think /θ/ 7. feather /ð/ 12. thank /θ/ 17. breathe /ð/
3. other /ð/ 8. three /θ/ 13. brother /ð/ 18. them /ð/
4. weather /ð/ 9. thieves /ð/ 14. month /θ/ 19. thirsty /θ/
5. theatre /θ/ 10. there /ð/ 15. healthy /θ/ 20. clothe /ð/
How is th pronounced in the following words? Circle the correct option
1. that /θ/ /ð/ 6. earth /θ/ /ð/ 11. although /θ/ /ð/ 16. breath /θ/ /ð/
2. think /θ/ /ð/ 7. feather /θ/ /ð/ 12. thank /θ/ /ð/ 17. breathe /θ/ /ð/
3. other /θ/ /ð/ 8. three /θ/ /ð/ 13. brother /θ/ /ð/ 18. them /θ/ /ð/
4. weather /θ/ /ð/ 9. thieves /θ/ /ð/ 14. month /θ/ /ð/ 19. thirsty /θ/ /ð/
5. theatre /θ/ /ð/ 10. there /θ/ /ð/ 15. healthy /θ/ /ð/ 20. clothe /θ/ /ð/
1. that /ð/ 6. earth /θ/ 11. although /ð/ 16. breath /θ/
2. think /θ/ 7. feather /ð/ 12. thank /θ/ 17. breathe /ð/
3. other /ð/ 8. three /θ/ 13. brother /ð/ 18. them /ð/
4. weather /ð/ 9. thieves /ð/ 14. month /θ/ 19. thirsty /θ/
5. theatre /θ/ 10. there /ð/ 15. healthy /θ/ 20. clothe /ð/
I. How is th pronounced in the following words? Circle the correct option
1. that /θ/ /ð/ 6. earth /θ/ /ð/ 11. although /θ/ /ð/ 16. breath /θ/ /ð/
2. think /θ/ /ð/ 7. feather /θ/ /ð/ 12. thank /θ/ /ð/ 17. breathe /θ/ /ð/
3. other /θ/ /ð/ 8. three /θ/ /ð/ 13. brother /θ/ /ð/ 18. them /θ/ /ð/
4. weather /θ/ /ð/ 9. thieves /θ/ /ð/ 14. month /θ/ /ð/ 19. thirsty /θ/ /ð/
5. theatre /θ/ /ð/ 10. there /θ/ /ð/ 15. healthy /θ/ /ð/ 20. clothe /θ/ /ð/
II. Choose the word that has the underlined part pronounced differently for the rest.
1. a. this b. think c. thank d.thieves
2. a. gather b. bathe c. birthday d. weather
3. a. tooth b. breathe c. through d. earth
4. a. thirty b. than c. therefore d. those
5. a. mouth b. Thursday c. nothing d. worthy
I. How is th pronounced in the following words? Circle the correct option
1. that /θ/ /ð/ 6. earth /θ/ /ð/ 11. although /θ/ /ð/ 16. breath /θ/ /ð/
2. think /θ/ /ð/ 7. feather /θ/ /ð/ 12. thank /θ/ /ð/ 17. breathe /θ/ /ð/
3. other /θ/ /ð/ 8. three /θ/ /ð/ 13. brother /θ/ /ð/ 18. them /θ/ /ð/
4. weather /θ/ /ð/ 9. thieves /θ/ /ð/ 14. month /θ/ /ð/ 19. thirsty /θ/ /ð/
5. theatre /θ/ /ð/ 10. there /θ/ /ð/ 15. healthy /θ/ /ð/ 20. clothe /θ/ /ð/
1. A 2.C 3.B 4.A 5.D
I. How is th pronounced in the following words? Circle the correct option
1. that /θ/ /ð/ 6. earth /θ/ /ð/ 11. although /θ/ /ð/ 16. breath /θ/ /ð/
2. think /θ/ /ð/ 7. feather /θ/ /ð/ 12. thank /θ/ /ð/ 17. breathe /θ/ /ð/
3. other /θ/ /ð/ 8. three /θ/ /ð/ 13. brother /θ/ /ð/ 18. them /θ/ /ð/
4. weather /θ/ /ð/ 9. thieves /θ/ /ð/ 14. month /θ/ /ð/ 19. thirsty /θ/ /ð/
5. theatre /θ/ /ð/ 10. there /θ/ /ð/ 15. healthy /θ/ /ð/ 20. clothe /θ/ /ð/
Mk đg cần gấp lắm ạ, bn nào làm nhanh và đúng thì mk sẽ tick cho nha!
1. /ð/
2./θ/
3./ð/
4./ð/
5./θ/
- Đợi xíu
1.2, 2.1, 3.2, 4.2, 5.1, 6.1, 7.2, 8.1, 9.1, 10.2, 11.2, 12.1, 13.2, 14.1, 15.2, 16.1, 17.1, 18.2, 19.1, 20.2
6./θ/
7./ð/
8./θ/
9./θ/
10. /ð/
11. /ð/
12./θ/
13. /ð/
14./θ/
15./θ/
16./θ/
17./ð/
18./ð/
19./θ/
20./ð/
- Hok tốt ~ Nhớ t ♥
Sin6(π + x) + cos6(x - π) - 2sin4(x + 2π) - sin4(x - \(\dfrac{3\pi}{2}\)) + cos2(x - \(\dfrac{\pi}{2}\)) . Rút gọn biểu thức trên.
\(sin^6\left(\pi+x\right)=sin^6x,cos^6\left(x-\pi\right)=cos^6\pi\\ sin^4\left(x+2\pi\right)=sin^4x,sin^4\left(x-\dfrac{3\pi}{2}\right)=cos^4x,cos^2\left(x-\dfrac{\pi}{2}\right)=sin^2x.\)
Khi đó \(A=sin^6x+cos^6x-2sin^4x-cos^4x+sin^2x\\ =\left(sin^2x+cos^2x\right)^2-3sin^2x.cos^2x\left(sin^2x+cos^2x\right)-\left(sin^4x+cos^4x\right)-sin^4x+sin^2x\\ =1-3sin^2x.cos^2x-\left[1-2sin^2x.cos^2x\right]-sin^2x.\left(sin^2x-1\right)\\ =1-3sin^2x.cos^2x-1+2sin^2x.cos^2x+sin^2x.cos^2x\\ =0\)
Cho cosα = 1/3, tính sin(α + π/6) - cos(α - 2π/3)
Cho phương trình: 2 cos x - 1 2 sin x + cos x
sin 2 x - sin x .Tính tan của nghiệm x lớn nhất của phương trình trong khoảng
- 2 π ; 2 π
A. -1
B. 1
C. -2
D. 2 2