# ข้อสอบโอเน็ตคณิตศาสตร์ 2552

Post on 27-Jun-2015

226 views

Category:

## Documents

Tags:

• #### cos21 tan

Embed Size (px)

TRANSCRIPT

• 1. 04 21 2552 11.30 - 13.30 . 2 1. () 0 0 () 0 1. () () 2. () () 3. () () 4. () () 2. 1 2 2 8 2 2 ( 2) 32 + + 1. -1 2. 1 3. 3 4. 5

2. 04 21 2552 11.30 - 13.30 . 3 3. 3 3 5 1.732 2.236 () 2.235 1.731 5 3 2.237 1.733+ + + () 2.235 1.731 5 3 2.237 1.733 1. () () 2. () () 3. () () 4. () () 3. 04 21 2552 11.30 - 13.30 . 4 4. () a b 0b a a b+ = = + () a b 1ba ab= = 1. () () 2. () () 3. () () 4. () () 4. 04 21 2552 11.30 - 13.30 . 5 5. a b c d () a b () c d 1. () () 2. () () 3. () () 4. () () 6. 7 6x = 1. 10 15 2. 14 3. 2 4. 3 5. 04 21 2552 11.30 - 13.30 . 6 7. 21o A B C 1. sin 21 cos69o o = 2. sin 21 cos21o o = 3. cos21 tan 21o o = 4. tan 21 cos69o o = 8. 1. sin30 sin 45o o < 2. cos30 cos45o o < 3. tan 45 cot 45o o < 4. tan 60 cot 60o o < 6. 04 21 2552 11.30 - 13.30 . 7 9. A B C A B C sin cos tan 40o 0.643 40o 0.766 40o 0.839 41o 0.656 41o 0.755 41o 0.869 42o 0.669 42o 0.743 42o 0.900 ABC B C 41o BX 1 A B C X AX 1. A 2. B 3. C 4. A, B C 7. 04 21 2552 11.30 - 13.30 . 8 10. A B 1. A 2. B 3. A 4. B 11. 2,5,10,17,26,.... 10 1. 145 2. 121 3. 101 4. 84 12. {1,2}A = { , }B a b= A B 1. (2, )b 2. ( , )b a 3. ( ,1)a 4. (1,2) 8. 04 21 2552 11.30 - 13.30 . 9 13. { }1,99A = A 1. 2. 3. 4. 14. r 1. r (1,1),(2,2) (3,3) 2. r 3. r (3,3) (3, 1) 4. r (1,1) ( 1,1) 9. 04 21 2552 11.30 - 13.30 . 10 15. 1 12 23 22 + ++ = x x xx x y 1. -2 2. -1 3. 0 4. 1 16. a (2 )x y a= (3,16) 1. 2 2. 3 3. 4 4. 5 17. 40 1. 1 2na n= 2. 1 2na n= + 3. 2 2na n= 4. 2 2na n= + 10. 04 21 2552 11.30 - 13.30 . 11 18. 1 2 3, ,a a a 1 2a = 3 200a = 2a 1. -20 2. -50 3. 60 4. 100 19. 32 18 16 8 1. 6 2. 8 3. 10 4. 12 11. 04 21 2552 11.30 - 13.30 . 12 20. () () 1. 2. 3. 4. 21. 65 3 1. 30 2. 36 3. 42 4. 48 12. 04 21 2552 11.30 - 13.30 . 13 22. 2 y ax bx c= + + 0a 2 0ax bx c+ + = 1. 2. 3. 4. 13. 04 21 2552 11.30 - 13.30 . 14 23. 100 1. 1 3 5 ... (2 1) ... 199n+ + + + + + 2. 1 1 1 1 1 ... ... 3 5 (2 1) 199n + + + + + + 3. 1 199 1 2 4 ... (2 ) ... 2n + + + + + + 4. 19912 5 1 5 1 3125 1 125 1 5 1 ++++++ LL n 24. 1 + 6 + 11 + 16 + ....... + 101 1. 970 2. 1020 3. 1050 4. 1071 14. 04 21 2552 11.30 - 13.30 . 15 25. 1. 2. 3. 4. 26. 2 12 171 1. 167 2. 172 3. 175 4. 177 15. 04 21 2552 11.30 - 13.30 . 16 27. 4, 9, 2, 7, 6, 5, 4, 6, 3, 4 1. < < 2. < < 3. < < 4. < < 28. 10 155, 157, 158, 158, 160, 161, 161, 163, 165, 166 158 1. 2. 3. 4. 16. 04 21 2552 11.30 - 13.30 . 17 29. 1. 2. 3. 4. 30. 20 25 30 1. 2. 3. 4. 17. 04 21 2552 11.30 - 13.30 . 18 31. 10, 5, 6, 9, 12, 15, 8, 18 80P 1. 15.1 2. 15.4 3. 15.7 4. 16.0 32. 1. 2. - 3. 4. 18. 04 21 2552 11.30 - 13.30 . 19 33. 12 1. 3 2. 3.25 3. 3.5 4. 4 34. 1. 2. 3. 4. 19. 04 21 2552 11.30 - 13.30 . 20 35. () () 1. () () 2. () () 3. () () 4. () () 36. 3 9 1. 9 1 3 2. 9 2 3 3. 3 1 9 4. 3 2 9 20. 04 21 2552 11.30 - 13.30 . 21 37. 1 1 1 1 4 8 1. 168 2. 324 3. 672 4. 1,344 38. A C B A B B C A C 1 1. 5 2. 6 3. 8 4. 9 21. 04 21 2552 11.30 - 13.30 . 22 39. 15 10 25 1. 1 10 2. 1 5 3. 3 10 4. 1 2 40. 0, 1, 2 3 1. 1 4 2. 3 4 3. 1 2 4. 2 3

Recommended