Precalculus Examples

$\cos (2 \cdot \frac{π}{6})$

Step 1

Cancel the common factor of $2$ .

Tap for more steps...

Step 1.1

Factor $2$ out of $6$ .

$\cos (2 \cdot \frac{π}{2 (3)})$

Step 1.2

Cancel the common factor.

$\cos (2 \cdot \frac{π}{2 \cdot 3})$

Step 1.3

Rewrite the expression.

$\cos (\frac{π}{3})$

Step 2

The exact value of $\cos (\frac{π}{3})$ is $\frac{1}{2}$ .

$\frac{1}{2}$

Step 3

The result can be shown in multiple forms.

Exact Form:

$\frac{1}{2}$

Decimal Form:

$0.5$