CAS header

 

Find this content useful?
Think it should stay ad-free?

Exact Trigonometric Values

Exact Trigonometric Values

The following values for trigonometric functions can be established geometrically

Angle (degrees) 0 30 45 60 90
Angle (radians) 0 $\frac{\pi}{6}$ $\frac{\pi}{4}$ $\frac{\pi}{3}$ $\frac{\pi}{2}$
${\bf\sin(\theta)}$ 0 $\frac{1}{2}$ $\frac{1}{\sqrt{2}}$ $\frac{\sqrt{3}}{2}$ 1
${\bf\cos(\theta)}$ 1 $\frac{\sqrt{3}}{2}$ $\frac{1}{\sqrt{2}}$ $\frac{1}{2}$ 0
${\bf\tan(\theta)}$ 0 $\frac{1}{\sqrt{3}}$ 1 $\sqrt{3}$ $\infty$