ВВЕРХ
Найти косинус угла между векторами AB и AC
| № | Координаты точки А | Координаты точки В | Координаты точки С |
| 1 | (1, − 2, 3) | (0, −1, 2 ) | (3, – 4, 5) |
| 2 | (0, – 3, 6) | (– 12, – 3, – 3) | (– 9, – 3, – 6) |
| 3 | (3, 3, – 1) | (5, 5, – 2) | (4, 1, 1) |
| 4 | (– 1, 2, – 3) | (3, 4, – 6) | (1, 1, – 1) |
| 5 | (– 4, – 2, 0) | (– 1, – 2, 4) | (3, – 2, 1) |
| 6 | (5, 3, – 1) | (5, 2, 0) | (6, 4, – 1) |
| 7 | (– 3, – 7, – 5) | (0, – 1, – 2) | (2, 3, 0) |
| 8 | (2, – 4, 6) | (0, – 2, 4) | (6, – 8, 10) |
| 9 | (0, 1, – 2) | (3, 1, 2) | (4, 1, 1) |
| 10 | (3, 3, – 1) | (1, 5, – 2) | (4, 1, 1) |
| 11 | (2, 1, – 1) | (6, – 1, – 4) | (4, 2, 1) |
| 12 | (– 1, – 2, 1) | (– 4, – 2, 5) | (– 8, – 2, 2) |
| 13 | (6, 2, – 3) | (6, 3, – 2) | (7, 3, – 3) |
| 14 | (0, 0, 4) | (- 3, - 6, 1) | (- 5, - 10, - 1) |
| 15 | (2, – 8, – 1) | (4, – 6, 0) | (– 2, – 5, – 1) |
| 16 | (3, – 6, 9) | (0, – 3, 6) | (9, – 12, 15) |
| 17 | (0, 2, – 4) | (8, 2, 2) | (6, 2, 4) |
| 18 | (3, 3, – 1) | (5, 1, – 2) | (4, 1, 1) |
| 19 | (– 4, 3, 0) | (0, 1, 3) | (– 2, 4, – 2) |
| 20 | (1, – 1, 0) | (– 2, – 1, 4) | (8, – 1, – 1) |
| 21 | (7, 0, 2) | (7, 1, 3) | (8, – 1, 2) |
| 22 | (2, 3, 2) | (– 1, – 3, – 1) | (– 3, – 7, – 3) |
| 23 | (2, 2, 7) | (0, 0, 6) | (– 2, 5, 7) |
| 24 | (0, 3, – 6) | (9, 3, 6) | (12, 3, 3) |
| 25 | (3, 3, – 1) | (5, 1, – 2) | (4, 1, – 3) |
| 26 | (– 2, 1, 1) | (2, 3, – 2) | (0, 0, 3) |
| 27 | (1, 4, – 1) | (– 2, 4, – 5) | (8, 4, 1) |
| 28 | (0, 1, 0) | (0, 2, 1) | (1, 2, 0) |
| 29 | (– 4, 0, 4) | (– 1, 6, 7) | (1, 10, 9) |
| 30 | (– 2, 4, – 6) | (0, 2, – 4) | (– 6, 8, – 10) |