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| A. \( \frac{\sqrt{17}}{17} \) | B. \( \frac{\sqrt{5}}{5}\) | C. \( \frac{4\sqrt{17}}{17} \) | D. \( \frac{1}{17} \) |
| A. \( \frac{12}{13} \) | B. \( \frac{5}{13} \) | C. \( \frac{5}{12} \) | D. \( \frac{13}{12} \) |
| A. \( \text{cos}\alpha=\frac{9}{11} \) | B. \( \text{sin}\alpha=\frac{9}{11} \) | C. \( \text{sin}\alpha=\frac{11}{2\sqrt{10}} \) | D. \( \text{cos}\alpha=\frac{2\sqrt{10}}{11} \) |
| A. \( \text{cos}\alpha =\frac{5}{13} \) | B. \( \text{tg}\alpha =\frac{13}{12} \) | C. \( \text{cos}\alpha =\frac{12}{13} \) | D. \( \text{tg}\alpha =\frac{12}{5} \) |
