Задание
Таблица значений котангенсов:
| \(\displaystyle \frac{\pi}{6}=30^{\circ}\) | \(\displaystyle \frac{\pi}{4}=45^{\circ}\) | \(\displaystyle \frac{\pi}{3}=60^{\circ}\) | |
| \(\displaystyle \ctg\) | \(\displaystyle \sqrt{3}\) | \(\displaystyle 1\) | \(\displaystyle \frac{1}{\sqrt{3}}\) |
Решение