gia zadacha 15
TRANSCRIPT
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2. ? 15 ( 169915) 1 2 3 4 450 , 450 . . . 1, , , 1. . ! ! ! 3. , . 2 4 1 3 . 4. , . 1 2 b O b 5. . 1 2 6. , , , . 7. ? 15 ( 169916) 1 2 3 4 650 , . . . . . ! ! ! 8. , . b c 1 2 3 4 9. , . 1 2 b O b 10. 1 b 2 3 11. . 1 2 3 4 12. ? 15 ( 169917) 1 2 3 4 900 , . 600 , 1200 . 700 1100 , . . ! . ! ! 13. , . b c 1 2 3 4 41 = 32 = 14. 1800 . , , , . 000 12060180 = 15. 1800 , . b c 1 2 3 4 1 0 701 = 0 1102 = 0 18021 =+ 2 0 501= 0 1302 = 0 18021 =+ 16. . 1 2 17. ? 15 ( 169918) 1 2 3 4 . . , . ABC, = 3, = 4, = 5, . ! ! ! . 18. . ACB +< ACB +< CB +< 19. . 20. 1 2 3 . 21. . 3 4 5 22. ? 15 ( 169919) 1 2 3 4 . 1200 , 300 . 1, 1. 900 . ! ! . ! 23. . 3 4 5 24. 1800 . 0 180=++ 25. , , , . 26. 900 . 00 90180 =+ 0 90=+ 27. ? 15 ( 169920) 1 2 3 4 , = 500 , = 600 , = 700 , . , = 4, = 5, = 6, . . 1, 2, 3 . . . ! . 28. . 600 700 500 29. . 4 5 6 30. , - . 1 3 2 31. . ACB +< ACB +< CB +< 32. ? 15 ( 169921) 1 2 3 4 , . . 300 , , , 600 . , , . ! ! . ! 33. , . 1 2 r1 r2 2121 rr += 34. , , , . 1 35. , . 1 36. 1 D 2 D D 3 37. ? 15 ( 169922) 1 2 3 4 , , . 5 7, 3, . 3, 2, . 300 , , , 600 . . ! ! ! 38. 1 , . 39. 1 2 r1 r2 71 =r21 rr > l+ KN 0 180>+ DB 0 180>+ 51. . D ( )BCAD += 2 1 52. ? 15 ( 169927) 1 2 3 4 . . , , . , , . ! ! ! ! 53. , . , . D O 54. . 55. . 56. . 57. ? 15 ( 169929) 1 2 3 4 . , , 3, 4, 5, . , , . . . . . ! 58. . , . 59. bb += cos2222 5;4;3 === cb 0cos = 0 90= 60. 1800 , . D 61. , . , . D O 62. ? 15 ( 169930) 1 2 3 4 . . . . ! ! . ! 63. , . 64. , . D 65. , , . 66. , . D 67. ? 15 ( 169931) 1 2 3 4 . . . . ! ! ! . 68. , , . 69. , , . 70. , , . 71. , . D 72. ? 15 ( 169933) 1 2 3 4 6 10, 8. . . ABC, =3, =4, =5, . . ! ! ! 73. . a b c 22 ba = 222 bac += 74. 1 2 3 75. 1 2 3 76. a b c Acbbca += cos2222 Cabbac += cos2222 Baccab += cos2222 0cos = 0cos > 0cos < - - - 77. ? 15 ( 169935) 1 2 3 4 - - sin . 5 12, 13. ABC, =5, =6, =7, . . ! . . . 78. a b c Acbbca += cos2222 Cabbac += cos2222 C c B b A a = = sinsinsin Baccab += cos2222 79. . a b c 22 ba += 222 bac += 80. a b c Acbbca += cos2222 Cabbac += cos2222 Baccab += cos2222 0cos = 0cos > - - - 0cos < 81. . a b c 222 bca = 222 bac += 82. ? 15 ( 169936) 1 2 3 4 , . . 4 5, 300 , 10. 4 5, 300 , 10. ! ! ! . 83. 21 SS = 84. . D ( ) BHBCADS += 2 1 85. . AACBS = sin 2 1 86. . AACBS = sin D 87. ? 15 ( 169938) 1 2 3 4 , , . 3 4, 6. . . ! . ! ! 88. r rPS = 2 1 , . 89. . D BDS = 2 1 90. . D ( ) BHBCADS += 2 1 91. . BS = 2 1 92. ? 15 ( 169939) 1 2 3 4 ABC, =4, =5, =6, A . . , . , , . ! ! . ! 93. . 4 5 6 94. . ACB +< ACB +< CB +< 95. 1 2 3 96. , . r rPS = 2 1 97. ? 15 ( 169941) 1 2 3 4 , - . . . 1, , , 1. ! ! . ! 98. 1 2 3 99. . 100. . D ( ) BHBCADS += 2 1 101. , , , . 102. http://www.mathgia.ru:8080/or/gia12/Main.html?view=Pos 2012.