trigonometry · worked example

Solve cos(30°)

Problem

$\cos(30°)$

Step-by-step solution

In un triangolo $30$ - $60$ - $90$ , i lati sono nel rapporto $1 : \sqrt{3} : 2$ .
Coseno di $30°$ = cateto adiacente/ipotenusa = $\frac{\sqrt{3}}{2}$ .

Answer

$\cos(30°) = \tfrac{\sqrt{3}}{2}$

Want to solve a different problem? Open the sin-cos-tan solver →