Wartości funkcji trygonometrycznych wybranych kątów

W tabli poniżej przedstawiono wartości funkcji trygonometrycznych wybranych kątów przedstawionych w radianach i stopniach.

\(\alpha\)		\(\text{sin} \: \alpha\)	\(\text{cos} \: \alpha\)	\(\text{tg} \: \alpha\)	\(\text{ctg} \: \alpha\)
\(\text{radiany}\)	\(\text{stopnie}\)
\(0\)	\(0\)	\(0\)	\(1\)	\(0\)	\(-\)
\(\dfrac{\pi}{12}\)	\(15\)	\(\dfrac{\sqrt{6} - \sqrt{2}}{4}\)	\(\dfrac{\sqrt{6} + \sqrt{2}}{4}\)	\(2 - \sqrt{3}\)	\(2 + \sqrt{3}\)
\(\dfrac{\pi}{10}\)	\(18\)	\(\dfrac{\sqrt{5} - 1}{4}\)	\(\dfrac{\sqrt{10 + 2 \sqrt{5}}}{4}\)	\(\dfrac{\sqrt{25 - 10 \sqrt{5}}}{5}\)	\(\sqrt{5 + 2 \sqrt{5}}\)
\(\dfrac{\pi}{8}\)	\(22 \dfrac{1}{2}\)	\(\dfrac{\sqrt{2 - \sqrt{2}}}{2}\)	\(\dfrac{\sqrt{2 - \sqrt{2}}}{2}\)	\(\sqrt{2} -1\)	\(\sqrt{2} + 1\)
\(\dfrac{\pi}{6}\)	\(30\)	\(\dfrac{1}{2}\)	\(\dfrac{\sqrt{3}}{2}\)	\(\dfrac{\sqrt{3}}{3}\)	\(\sqrt{3}\)
\(\dfrac{\pi}{4}\)	\(45\)	\(\dfrac{\sqrt{2}}{2}\)	\(\dfrac{\sqrt{2}}{2}\)	\(1\)	\(1\)
\(\dfrac{\pi}{3}\)	\(60\)	\(\dfrac{\sqrt{3}}{2}\)	\(\dfrac{1}{2}\)	\(\sqrt{3}\)	\(\dfrac{\sqrt{3}}{3}\)
\(\dfrac{5}{12} \pi\)	\(75\)	\(\dfrac{\sqrt{6} + \sqrt{2}}{4}\)	\(\dfrac{\sqrt{6} - \sqrt{2}}{4}\)	\(2 + \sqrt{3}\)	\(2 - \sqrt{3}\)
\(\dfrac{\pi}{2}\)	\(90\)	\(1\)	\(0\)	\(-\)	\(0\)
\(\pi\)	\(180\)	\(0\)	\(-1\)	\(0\)	\(-\)
\(\dfrac{3}{2} \pi\)	\(270\)	\(-1\)	\(0\)	\(-\)	\(0\)
\(2 \pi\)	\(360\)	\(0\)	\(1\)	\(0\)	\(-\)