ฟังก์ชันตรีโกณมิติ

(0, 1)

(1, 0)

(-1, 0)

(0, -1)

 $\left(\frac{\sqrt{2}}{2},\ \frac{\sqrt{2}}{2}\right)$  

 $\left(-\frac{\sqrt{2}}{2},\ \frac{\sqrt{2}}{2}\right)$  

 $\left(-\frac{\sqrt{2}}{2},\ -\frac{\sqrt{2}}{2}\right)$  

 $\left(\frac{\sqrt{2}}{2},\ -\frac{\sqrt{2}}{2}\right)$  

(1, 0)

(0, 1)

(-1, 0)

(0, -1)

 $\left(\frac{\sqrt{3}}{2},\ \frac{1}{2}\right)$  

 $\left(-\frac{\sqrt{3}}{2},\ \frac{1}{2}\right)$  

 $\left(-\frac{\sqrt{3}}{2},\ -\frac{1}{2}\right)$  

 $\left(\frac{\sqrt{3}}{2},\ -\frac{1}{2}\right)$  

 $\frac{-1-\sqrt{2}}{2}$  

 $\frac{-1+\sqrt{2}}{2}$  

 $-1-\sqrt{2}$  

 $-1+\sqrt{2}$  

 $\frac{\sqrt{3}+1}{2\sqrt{3}}$  

 $\frac{-\sqrt{3}-1}{2\sqrt{3}}$  

 $\frac{-\sqrt{3}-1}{\sqrt{6}}$  

 $\frac{\sqrt{3}-1}{2\sqrt{3}}$  

 $\frac{\sqrt{3}}{2}$  

 $\frac{5}{6}$  

 $\frac{9}{4}$  

 $\frac{3}{2}$  

 $\frac{1}{2}$  

 $-\frac{1}{2}$  

 $\frac{\sqrt{2}}{2}$  

 $-\frac{\sqrt{2}}{2}$  

 $\sin50^{\degree}$  

 $\tan50^{\degree}$  

 $\sin40^{\degree}$  

 $\tan40^{\degree}$  

 $\sec11^{\degree}$  

 $\sin11^{\degree}$  

 $\sec21^{\degree}$  

 $\sin21^{\degree}$