# 三角函数值表

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