Giá trị lượng giác của một góc

 $1$  

 $\sqrt{2}$  

 $\sqrt{3}$  

 $0$  

 $\frac{4}{\sqrt{3}}$  

 $\frac{1+\sqrt{3}}{3}$  

 $\frac{2}{\sqrt{3}}$  

 $2$  

 $\sin150\degree=-\frac{\sqrt{3}}{2}$  

 $\cos150\degree=\frac{\sqrt{3}}{2}$  

 $\tan150\degree=-\frac{1}{\sqrt{3}}$  

 $\cot150\degree=\sqrt{3}$  

 $P=\sqrt{3}$  

 $P=\frac{\sqrt{3}}{2}$  

 $P=1$  

 $P=0$  

 $P=1$  

 $P=0$  

 $P=\sqrt{3}$  

 $P=-\sqrt{3}$  

 $\sin45\degree+\cos45\degree=\sqrt{2}$  

 $\sin30\degree+\cos60\degree=1$  

 $\sin60\degree+\cos150\degree=0$  

 $\sin120\degree+\cos30\degree=0$  

$\sin0\degree+\cos0\degree=0$

$\sin90\degree+\cos90\degree=1$

$\sin180\degree+\cos180\degree=-1$

$\sin60\degree+\cos60\degree=\frac{\sqrt{3}+1}{2}$

 $\sin45\degree=\cos45\degree$ 

 $\cos45\degree=\sin135\degree$ 

 $\cos30\degree=\sin120\degree$ 

 $\sin60\degree=\cos120\degree$ 

 $\cos B=\frac{1}{\sqrt{3}}$ 

 $\sin C=\frac{\sqrt{3}}{2}$ 

 $\cos C=\frac{1}{2}$ 

 $\sin B=\frac{1}{2}$ 

 $\sin BAH=\frac{\sqrt{3}}{2}$ 

 $\cos BAH=\frac{1}{\sqrt{3}}$ 

 $\sin ABC=\frac{\sqrt{3}}{2}$ 

 $\sin AHC=\frac{1}{2}$