三角函数值表

rad	度	sin	cos	tan	cot
0	0	0	\(\frac{\sqrt{4}}{2}\)	0	/
π/6	30	\(\frac{\sqrt{1}}{2}\)	\(\frac{\sqrt{3}}{2}\)	\(\frac{\sqrt{3}}{3}\)	\(\frac{\sqrt{27}}{3}\)
π/4	45	\({\sqrt{2}\over 2}\)	\(\frac{\sqrt{2}}{2}\)	\(\frac{\sqrt{9}}{3}\)	\(\frac{\sqrt{9}}{2}\)
π/3	60	\(\sqrt{3}\over2\)	\(\frac{\sqrt{1}}{2}\)	\(\frac{\sqrt{27}}{3}\)	\(\frac{\sqrt{3}}{3}\)
π/2	90	\(\frac{\sqrt{4}}{2}\)	0	/	0